Sleep Science is a Costco-channel value brand from South Bay International, founded in 1993. It sells thick all-foam mattresses and adjustable-base bundles at mysleepscience.com. You get a 120-night trial and a 20-year warranty. It's best if you're a bargain hunter who wants plush memory foam, a flippable firmness option or a mattress-plus-base set. Expect heavy all-foam builds. Don't expect luxury cooling or innerspring bounce.
Ara Memory Foam 13 inch
Ara Memory Foam 13 inch, product photo
FirmnessMid-plushNot yet researched
Mattress TypeAll-foam13 inches tall
Queen $$1,699 (Queen set with base)$1,999.99
Coil CountNot yet researchedNot yet researched
Key Strengths
Bargain hunters who want plush memory foam
Costco shoppers
Buyers who want a two-sided flippable option
Shoppers who want a mattress-plus-adjustable-base bundle
Good to Know
Shoppers who want an innerspring or hybrid
Hot sleepers who need advanced active cooling
Buyers who want a light mattress that's easy to handle
Shoppers who want broad third-party review coverage
Costco-channel brand. Choose Sleep Science if you shop Costco or mysleepscience.com direct and want thick all-memory-foam comfort at sale prices, a 2-sided flippable option, or a mattress-plus-adjustable-base bundle. Skip it if you want an innerspring or hybrid, advanced active cooling, lightweight handling, or broad third-party review coverage, which is limited as of Sept 2026.
Outside review scores
Review sites checked: GoodBed, Mattress Clarity, Sleep Like The Dead, ConsumerAffairs. Their scores: Not published. Model they tested: Not yet researched. Each site tests in its own way, so read each row on its own.
Sleep Science is a Costco-channel value brand selling thick all-foam mattresses and adjustable-base bundles direct at mysleepscience.com. Best for bargain hunters wanting plush memory foam, flippable firmness, or a mattress-plus-base set with 20-year warranty and 120-night trial. Expect heavy all-foam builds, not luxury cooling or innerspring bounce.
Not yet researched
Not yet researched
Not yet researched
Not yet researched
Not yet researched
Not yet researched
When Sleep Science makes sense
Bargain hunters who want plush memory foam
Costco shoppers
Buyers who want a two-sided flippable option
Shoppers who want a mattress-plus-adjustable-base bundle
When Another Mattress May Suit You Better
Shoppers who want an innerspring or hybrid
Hot sleepers who need advanced active cooling
Buyers who want a light mattress that's easy to handle
Shoppers who want broad third-party review coverage
Review site scores
How the big review sites score Sleep Science
Each site's own score and the exact bed it tested, side by side.
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Publication
Reported Score
Configuration Tested
Testing Scope
Evaluation Focus
Main configuration: Not yet researched. Read each row's testing scope before comparing scores. Each outlet uses its own method, so we don't combine these scores into one rating.
Reading the scores
Why we don't average the scores
Use the dates and sources shown with each result. Prices, models and policies can change.
Chapter 02
Comfort and firmness: which mattress fits you
Why this matters to you: Feel names are the brand's words, not measurements. Use them to shortlist two or three beds, then let your body decide.
Side sleepers: start with Ara 13 inch mid-plush or Sonoma medium-soft side. Back sleepers: Ara mid-plush, Sonoma either side, or Copper if you like firm. Stomach sleepers: Copper 14 inch firm first, then Sonoma medium-firm side.
Hot sleepers: air-channel bases and washable covers help airflow but there is no active cooling tech published; manage expectations. Couples and base users: consider Queen/King Split mattress-plus-adjustable-base bundles with head/foot lift, massage and app control on Ara sets.
Firmness finder
Which Sleep Science feel fits you?
Weight chart not yet researched
Weight and sleep position can change how a bed feels. We have not yet checked whether Sleep Science publishes a fit chart by body weight, so use a trial, where one is offered, to test the bed the way you sleep at home.
Neck: on your side, your nose should line up with the middle of your chest, not tip up or down.
Shoulders: your bottom shoulder should sink in. Tingling or a numb arm means the bed is too firm for you.
Lower back: on your back, slide a flat hand under your waist. A big gap means too firm; no room at all can mean too soft.
Hips: ask someone to look from the side. Hips lower than shoulders means the bed is too soft for you.
Figure 2.1: Four checks to run in a store, lying still in the position you sleep in most. The store test in chapter 11 says how long to lie on each bed.
Chapter 03
Compare the mattresses
Why this matters to you: Models from one brand can differ in feel, height and layers. Match the feel label and height to how you sleep before you compare prices.
Sleep Science lists 3 models. Feel names are the brand's labels.
Ara Memory Foam 13 inch: 13 inch all-foam plus adjustable-base bundle; 3 inch 5-lb pillow-top memory foam plus 3-5/8 inch 5-lb memory foam plus comfort foam plus 6 inch air-channel base; mid-plush cloud feel for side and back sleepers; washable cover and wedge edge support; Queen set about 1,699 dollars sale vs 1,999.99 dollars, King Split about 2,499 dollars sale, some variants shown sold out. / Copper Memory Foam 14 inch: 14 inch firm all-foam; 1 inch copper-infused visco plus 2 inch memory foam plus 11 inch air-channel base with wedge support; firm support aimed at stomach and back sleepers; Queen 899.99 dollars was 1,299 dollars, King/Cal King 1,059.99 dollars was 1,499 dollars, base sets to about 3,199.99 dollars. / iFlip Sonoma 2-Sided 12 inch: 12 inch flippable all-foam; light-stripe-up medium-soft face and dark-stripe-up medium-firm face around air-comfort foam and 4 inch air-channel core; suits back, side and stomach sleepers wanting two feels; Queen 899.99 dollars, King/Cal King 1,099.99 dollars, Queen-plus-base set 2,099.99 dollars, some splits sold out.
Site also lists Bamboo Cool, iFlip Napa and FirmFlex lines; details Not published as of Sept 2026.
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Visual
Model
Build
Profile
Firmness (brand words)
Queen $
Ara Memory Foam 13 inch
All-foam bed in a bundle with an adjustable base. It has a 3 in 5-lb pillow-top memory foam layer, 3-5/8 in of 5-lb memory foam, comfort foam and a 6 in air-channel base. You get a washable cover and wedge edge support.
13 inches
Mid-plush
$1,699 (Queen set with base)
Copper Memory Foam 14 inch
All-foam bed with 1 in of copper-infused visco foam, 2 in of memory foam and an 11 in air-channel base with wedge support.
14 inches
Firm
$899.99
iFlip Sonoma 2-Sided 12 inch
Flippable all-foam bed around air-comfort foam and a 4 in air-channel core.
12 inches
Medium-soft or medium-firm by side
$899.99
Where the maker doesn't publish a number, we say so.
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Model
Coil gauge
Coil count
Foam density
Latex
ILD
Model 1 of 3
Ara Memory Foam 13 inch: Not yet researched
Ara Memory Foam 13 inch
Ara Memory Foam 13 inch, product photo
ConstructionNot yet researched
Profile13 inches
FirmnessMid-plush
Queen $$1,699 (Queen set with base)
Edge supportWedge edge support
All-foam bed in a bundle with an adjustable base. It has a 3 in 5-lb pillow-top memory foam layer, 3-5/8 in of 5-lb memory foam, comfort foam and a 6 in air-channel base. You get a washable cover and wedge edge support.
Why this matters to you: A starting price can rise with size, base and delivery. Get the full price for your size in writing before you choose.
Direct prices observed Sept 2026 on mysleepscience.com: Ara 13 inch Queen set 1,699 dollars sale vs 1,999.99 dollars, King Split 2,499 dollars vs 2,999.99 dollars; Copper 14 inch Queen 899.99 dollars was 1,299 dollars, King/Cal King 1,059.99 dollars was 1,499 dollars, sets 1,999.99 to 3,199.99 dollars; Sonoma 12 inch Queen 899.99 dollars, King/Cal King 1,099.99 dollars, Queen-plus-base 2,099.99 dollars.
Value pitch is thick foam plus bundle discounts and 20-year mattress warranty. Costco warehouse/online pricing and promotions vary and are not published; confirm live Costco listing before citing a price. Not published as of Sept 2026 for current Costco shelf prices.
Sleep Science prices by size
Queen (Ara set with base)
Not yet researched$1,699$1,999.99
King Split (Ara set with base)
Not yet researched$2,499$2,999.99
White-glove delivery, setup, and old-mattress removal are covered in Delivery & Setup.
Prices and sales discounts come from current brand catalogs. Prices may change during holiday promotions.
Are the expensive ones worth it?
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Model
Buy Sleep Science If
Skip If
Buy Instead
Chapter 05
How well do the mattresses hold up?
Why this matters to you: A mattress is a long buy. Lean on the written warranty and real owner reports to judge how it will last.
Short-term feel is plush and pressure-relieving per official positioning with 30-60 day break-in noted. Support cores use thick air-channel base foam plus wedge edge reinforcement claimed to add usable surface. Warranty covers visible indentation over three-fourths inch from cell-structure deterioration, not normal softening or sag-associated impressions.
Independent long-term sag, heat-retention and edge-durability test data: Not published as of Sept 2026. Heavy weights (Queen 79-118 lbs depending on model, King 100-115 lbs) imply dense builds but need two-person handling.
What to watch for, and when:
Ownership, deals, lawsuits & launches
Company History & Model Evolution
Show the full company history
Each milestone comes from the brand's own pages, government and court records, or named news reports, each with the date we checked it. Factory suppliers may update minor parts over time.
What we could confirm, and what the brand doesn't say
The left column is what we checked. Rows marked THE BRAND SAYS only report what the brand says. The right column is what the brand doesn't publish. Use the right column as your list of questions for a store or the brand's chat.
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What we checked
What the brand doesn't publish
THE BRAND SAYS20-year limited warranty
NOT PUBLISHEDNo independent long-term durability data
THE BRAND SAYSAir-channel base with wedge edge
NOT PUBLISHEDNo full foam densities
THE BRAND SAYS5-lb memory foam on Ara
NOT PUBLISHEDNo claim instructions or prorating schedule
THE BRAND SAYSNot yet researched
NOT PUBLISHEDNot yet researched
Where sources disagree
Chapter 06
Sleep trials, returns, exchanges and fees
Why this matters to you: Feel is hard to judge in a store or in a week. Know your exit plan and its cost before you pay.
Direct at mysleepscience.com per Policies page: 120-Day Sleep Trial and Hassle-Free Return Policy on MATTRESS ONLY orders and SLEEP BUNDLES; sleep on it 30 days first, decide between 30 and 120 days. Adjustable-base-only orders and accessories (bedding, pillows, protectors, sheets, brackets) carry a 30 DAY return window from delivery; replacement remotes are final sale non-returnable.
Fees and exchange mechanics: Not published as of Sept 2026 beyond that policy text. Costco purchases follow Costco warehouse/online return terms on the live listing: Not published as of Sept 2026 here.
Your trial, night by night
Night 1Trial starts, sleep on it first
Day 30Earliest decision point
120 daysLast day to start a return
What each choice costs you
Keep it$0Nothing more to do
Return itNone (free returns)Replacement remotes are final sale
Swap itNot yet researchedNot published
Not covered by the trial: Base-only orders and accessories get 30 days
Figure 6.1: The trial in three dates and three prices. Put the last date in your calendar the day the bed arrives.
Check the terms for your seller and order date before buying from Sleep Science.
Chapter 07
Delivery, setup and old-mattress removal
Why this matters to you: Delivery terms decide your first week with the bed. Confirm the date, setup and old-bed removal before you pay.
Direct delivery options at checkout: FedEx parcel 5-10 days across most US zips; White Glove room delivery 2-4 weeks by appointment with setup and packing removal for an extra fee, noted as free for King and Cal King mattresses on the Ara page. Mattresses ship compressed and rolled in a box with near-full recovery claimed.
Costco delivery, setup, haul-away and old-mattress removal follow the live Costco listing terms: Not published as of Sept 2026.
Typical wait: 5 to 10 days
Figure 7.1: What happens between your order and your first night. Clear a path to the bedroom before the team arrives.
Confirm the delivery date, setup and removal terms for your address before ordering.
Chapter 08
Terms checked on the brand's site · recheck before you buy
What do the warranties cover?
Why this matters to you: A warranty is only as good as its terms. Read the written terms and use a supported base, because the wrong frame can end coverage.
Mattress: 20-year limited warranty to the original purchaser with proof of purchase; covers cell-structure deterioration causing visible indentation greater than three-fourths inch not associated with sag; requires proper support such as continuous surface or adjustable base plus waterproof protector story on product pages; excludes spills, soiling/unsanitary conditions, cover fading/pilling/shrinkage, normal softening and normal wear.
Adjustable base: 10-year limited warranty to original owner with 1-year in-home service and free parts replacement in years 2-5 per product pages. Implied warranties limited to the warranty period where allowed. Claim instructions and prorating schedule: Not published as of Sept 2026.
Covered when the dip is deeper than Three-fourths inch, measured with nobody on the bed.
Strip the bed down to the mattress and wait a few hours so the top layers can recover.
Lay a straight edge (a broom handle or long level) across the dip, resting on the flat parts.
Measure from the edge down to the deepest point, then photograph the ruler for your claim.
Figure 8.1: How to measure a sag before you file a warranty claim. Drawing not to scale.
Before you set it up
Which bed bases keep your warranty
Warranty rules
Put the mattress on one of the bases marked OK. The wrong base can void the warranty, even on a new bed.
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Base
What the rule says
Adjustable base
Bundles with head/foot lift, massage and app control
Continuous surface
Required for warranty
Chapter 09
Review counts checked on each site · they change daily
Customer reviews and complaints
Why this matters to you: Star ratings depend on who posts and where. Read the low-star reviews for patterns, not just the average.
Third-party ratings and complaint tallies were thin when we checked in September 2026. The GoodBed brand page showed no reviews. Pages on Mattress Clarity, Sleep Like The Dead and ConsumerAffairs were unavailable. Costco's site was unavailable, so we couldn't verify member ratings.
Third-party ratings and complaint tallies were thin as of Sept 2026: GoodBed's brand page lists no reviews; no independent review pages were found for this brand; Costco.com member ratings could not be verified.
Common themes reported historically for this value-foam channel include comfort-for-price praise versus heavy handling, initial odor 24-48 hours, warmth, and split-set availability gaps, but model-level counts are Not published as of Sept 2026. Buy via Costco where possible for Costco member-service backing.
How we read the reviews
Read each platform on its own: who runs it, its rating scale, how many reviews it has, and the date we checked it.
Reported praise and concerns:
Review sites side by side
What each review site says
Not published
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Platform
Rating
Sample
Chapter 10
What are the mattresses made of?
Why this matters to you: Layer names say little without numbers. Ask what is inside your exact model, layer by layer.
All-foam memory-foam builds over high-density air-channel support cores, no innersprings published. Ara: 5-lb pillow-top and 5-lb memory-foam layers plus airflow comfort foam, wedge edge reinforcement, removable machine-washable cover, allergen/mite-resistant story. Copper: copper-infused visco top plus memory foam plus 11 inch proprietary air-channel base with patented wedge support.
Sonoma: symmetrical 2-sided stack with OptiAir medium-soft and medium-firm faces, air-comfort foam and central air-channel core, washable zip cover. Foams described as free of flame retardants, heavy metals, formaldehyde and phthalates; Sonoma page states CertiPUR certified; builds meet 16 CFR Part 1633 open-flame; paired bases UL listed/evaluated. Full layer densities beyond Ara 5-lb foams: Not published as of Sept 2026.
The materials, in plain words
Air-channel base
Not yet researched
Used in: Copper 14 inch
OptiAir
Not yet researched
Used in: Sonoma
Safety labels, and what each one covers
CertiPUR
Sonoma foams
Our research sheet lists this certification for Sleep Science. We have not yet checked it with the certifier.
16 CFR Part 1633 open-flame
Mattress builds
Our research sheet lists this certification for Sleep Science. We have not yet checked it with the certifier.
UL listed/evaluated
Paired adjustable bases
Our research sheet lists this certification for Sleep Science. We have not yet checked it with the certifier.
What these labels do and don't prove
Read your law tag
How to read the law tag in three steps
Why this matters to you:
Law tag guide
How to read a mattress law tag
The three steps
1
Air-channel support base
2
Wedge edge support
3
Copper-infused visco
Full law tag guide, factory code decoding, and the certificate glossary live on our shared safety page.
How to read this: the law tag, the brand's own statements, and certificates each cover different things. A spec the brand doesn't publish isn't proof it's missing; it just isn't shared.
Chapter 11
Where can you try and buy the mattresses?
Why this matters to you: Where you buy sets the price, the trial and who handles problems. Check the seller's terms, not just the brand's.
Costco-channel brand: try and buy at Costco warehouse/online when listed plus direct at mysleepscience.com. Official direct storefront is Shopify-based with Mattresses, Adjustable Bed Frames and Bundles navigation; phone Sleep Concierge Team 1-877-622-6550 M-F 8am-5pm PST. No brand-owned showroom network was published; in-person tryout depends on Costco warehouse floor stock, which varies by location.
Confirm local Costco availability before visiting.
Showroom Network
Direct at mysleepscience.com
Sleep Concierge Team 1-877-622-6550, M-F 8am-5pm PST
Store Access
Costco warehouse and online
Not yet researched
Sales Culture
No brand showrooms
Not yet researched
Inventory & Delivery
White Glove delivery by appointment
Not yet researched
How to test a bed in the store
Where Sleep Science sells
A sample to show the mix of store types. Use the brand's store finder for the ones near you.
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#
Channel
Type
1
Online
Brand website
2
Costco warehouses
Retailer
Not yet researched. Checked the official mysleepscience.com site.
Chapter 12
Sleep Science vs. other mattress brands
Why this matters to you: A fair comparison needs the same facts for both beds. Line up price, trial and warranty for each one.
Versus Costco peers: Sleep Science competes as the thick all-foam bundle-value pick against innerspring/hybrid boxed brands and latex upgrades; pick it for low sale prices plus base bundles, skip for coils or organic builds. Versus DTC memory-foam brands: similar pressure relief with heavier all-foam stacks and flippable Sonoma option, but less published trial transparency than 365-night leaders and thinner review coverage.
Versus adjustable-base specialists: bundles add head/foot lift, massage, app/Bluetooth and 750-lb capacity claims, but base-only warranty service is 1-year in-home. Firmness and spec disclosures are partial versus spec-rich competitors.
Competitor details reflect published prices and specs on the date shown. Mattress brands may update prices and trial terms over time.
Chapter 13
How we research and report
This page is an early draft built from our research sheet for Sleep Science. We read the brand's own pages and public listings, and we do not test mattresses ourselves. Fields marked "Not yet researched" are still being checked.
We researched official mysleepscience.com product and policy pages first, including https://mysleepscience.com/products/sleep-science-13-ara plus the Copper and Sonoma product pages, then checked Costco and independent review sources. No Costco listing or independent reviews were available, so those facts are marked Not published as of Sept 2026 rather than estimated.
Prices, layers, trial and warranty above reflect official page text observed Sept 2026; retailer promotions and stock change frequently.
How we check this page
Stage 01Factory
Who built the bed
Stage 02Test results
Outside test results
Stage 03Safety
Fire safety papers and the law tag
Stage 04Pressure and motion
Outside pressure and motion tests
Stage 05Reviews
Review scores, side by side
Quick Answers
Quick Answers Before You Buy
Safety and materials
Buying and policies
Is Sleep Science a Costco brand?
It is a Costco-channel brand sold through Costco warehouse/online when listed and direct at mysleepscience.com; confirm the live Costco listing for current models and prices. /
Which is softest?
Ara 13 inch mid-plush, then Sonoma medium-soft side; Copper 14 inch is the firm pick. /
Is Sonoma really flippable?
Yes per official page: light stripe up is medium-soft, dark stripe up is medium-firm. /
What trial and warranty apply direct?
120-day trial on mattress-only and bundle orders after a 30-day break-in, 30 days for base-only/accessories; 20-year limited mattress and 10-year limited base warranty to the original owner. /
Do they sleep hot?
Air-channel bases and breathable covers are claimed for airflow with no active cooling tech published; independent cooling tests Not published as of Sept 2026. /
How heavy are they?
Queen about 79-118 lbs and King about 100-115 lbs by model, so plan two-person setup.
Prices and promos checked Sept 2026. Recheck before buying.
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