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Sleep Science Mattress Reviews

Written by - Brad Nehring.
Sleep Science Mattress Reviews

The Bottom Line.

  • Sleep Science offers 11 individual mattress models, including memory foam and latex beds with flippable and one-sided designs.
  • Wide range of firmness and thickness options.
  • Sleep Science beds have foams infused with copper, bamboo, and charcoal, all components known to improve temperature neutrality.

Sleep Science mattresses are exclusively at Costco.

See here for online recommendations.

Skip the Hassle, Shop Online!

301 Verified Customer Experiences

6 Unique Sources

64 Hours of Lab Testing

4 Sleep Experts

Meet Our Testing Team
Brad
Brad
Keith
Keith
Bill
Bill
Jackson
Jackson

General Overview

  • Sleep Science offers a dozen different memory foam and latex mattresses with varying firmness ratings to accommodate a wide range of sleeper preferences.
  • According to our customer reports, Sleep Science mattresses offer effective motion isolation, produce little noise, and conform closely to sleeper’s bodies and alleviate a good deal of pressure.
  • Sleep Science mattresses are available at Costco, which operates a total of 727 brick-and-mortar stores located throughout the United States.
  • Costco allows members to return any item (including mattresses) at any time for a full refund, provided the item is in satisfactory condition; this negates the need for a traditional sleep trial.
  • The price-points of most Sleep Science mattresses are below-average compared to similar models when an adjustable base is not included in the total cost.

Cons

  • Sleep Science owners cite some performance issues, including above-average off-gassing, weak edge support, minimal responsiveness for sex, and ‘sleeping hot’.
  • Most Sleep Science mattresses are available in (at most) two to three sizes that do not require customers to also purchase an adjustable bed base; in some cases, the base component more than doubles the overall cost.
  • The minimum delivery time for a Sleep Science mattress is seven to 10 business days; at most, these models require two to four weeks for delivery. By comparison, most mattress manufacturers will ship any model to a customer within five to seven business days at most.

Quick Summary

Sleep Science offers memory foam and latex mattresses. A total of 12 different mattress models are featured in the company’s current lineup (listed by thickness from shortest to tallest):

  • The Dream mattress features a comfort system with a top layer of memory foam and a bottom layer of ‘Air Comfort’ polyfoam. The support core is made of polyfoam, and the cover is a bamboo fabric blend.
  • The Latex GL mattress is designed with three layers in the comfort system: a top layer of of Talalay latex (21 ILD); a middle layer of Talalay latex (19 ILD); and a bottom layer of Talalay latex (24 ILD). The support core is constructed from soy-infused polyfoam.
  • The Natural Latex mattress is designed with two latex layers: a comfort layer of Talalay latex (19 ILD) and a support core of Talalay latex (32 ILD). The cover is a blend of polyester, organic cotton, and spandex.
  • The Active Latex Medium-Firm mattress features two layers of Dunlop latex in the comfort system and a support core made of open-cell polyfoam.
  • The Active Studio Plush Medium mattress has a comfort system with a top layer of 4 PCF memory foam and a bottom layer of 3 PCF memory foam. The support core is constructed with base polyfoam.
  • The Marina mattress has a top layer of 3 PCF gel memory foam in the comfort system, followed by an ‘Air Comfort’ polyfoam layer. The support core is constructed from polyfoam as well, with ‘Wedge’ edge support encasement.
  • The Sleep Science mattress shares a similar design with the Marina: a comfort system with a top layer of standard memory foam and a bottom layer of ‘Air Comfort’ polyfoam; and a polyfoam support core with a ‘Wedge’ edge support encasement.
  • The Black Diamond mattress is a blended model with three comfort system components: a top layer of 5 PCF charcoal bamboo memory foam; a second layer of 5 PCF memory foam; and a third layer of latex. The support core is made of polyfoam with a ‘Wedge’ edge support encasement.
  • The Carina mattress has three components in the comfort system: a top layer of 3 PCF gel memory foam; a second layer of 4 PCF memory foam; and a bottom layer of latex. The polyfoam support core is cut with one-inch (1″) grooves for increased air circulation.
  • The Active Loft mattress is designed with two layers of 4 PCF memory foam in the comfort system and a support core made of open-cell polyfoam.
  • The iFlip Sonoma mattress is a reversible memory foam model with one side rated as ‘Soft’ and the other rated as ‘Medium Firm’. The ‘Soft’ side has a comfort system with a top layer of 3 PCF memory foam (10 ILD) and a second layer of ‘Air Comfort’ polyfoam; the ‘Medium Firm’ side has a top layer of 3 PCF memory foam (13 ILD) and a second layer of ‘Air Comfort’ polyfoam. The shared support core is made of ‘Air Channel’ polyfoam cut into one-inch (1″) squares.
  • The Ara mattress has two layers of 5 PCF memory foam in the comfort system, followed by a layer of ‘Air Comfort’ polyfoam. The support core is constructed from ‘Air Channel’ polyfoam cut into one-inch (1″) squares.

Please note: the ESCAPE Luxury mattress is listed on the Sleep Science website, but this model is currently not available for purchase on Costco.com.

Sleep Science mattresses are sold exclusively at Costco.

If you'd rather shop online, read our recommendations and top picks.

Shop Online Mattresses
  • Latex
  • Memory Foam

Full Sleep Rating

Criteria
Rating
Durability
Motion Isolation
Off-gassing
Pressure Relief
Temperature Neutrality
Edge Support
Noise
Sex

Full Sleep Rating

Criteria
Rating
Durability
Motion Isolation
Off-gassing
Pressure Relief
Temperature Neutrality
Edge Support
Noise
Sex
  • Latex
  • Memory Foam
Durability
Motion Isolation
Off-gassing
Pressure Relief
Temperature Neutrality
Edge Support
Noise
Sex
Durability
Motion Isolation
Off-gassing
Pressure Relief
Temperature Neutrality
Edge Support
Noise
Sex
#

Durability

According to our feedback, most Sleep Science latex mattresses have a lifespan of six to seven years; this is on par with the average durability for all mattresses.

#

Durability

According to our feedback, most Sleep Science latex mattresses have a lifespan of six to seven years; this is on par with the average durability for all mattresses.

#

Motion Isolation

Latex models from Sleep Science isolate motion to a significant extent, and owners note fewer nighttime disruptions as a result.

#

Motion Isolation

Latex models from Sleep Science isolate motion to a significant extent, and owners note fewer nighttime disruptions as a result.

#

Off-gassing

Latex mattresses from Sleep Science produce minimal off-gassing, and smells typically clear out in a matter of days.

#

Off-gassing

Latex mattresses from Sleep Science produce minimal off-gassing, and smells typically clear out in a matter of days.

#

Pressure Relief

Customer reports indicate that Sleep Science latex mattresses conform quite closely and relieve a significant amount of bodily pressure.

#

Pressure Relief

Customer reports indicate that Sleep Science latex mattresses conform quite closely and relieve a significant amount of bodily pressure.

#

Temperature Neutrality

Like many other latex models, Sleep Science mattresses retain a fair amount of body heat and tend to sleep hot.

#

Temperature Neutrality

Like many other latex models, Sleep Science mattresses retain a fair amount of body heat and tend to sleep hot.

#

Edge Support

Despite the presence of an edge support encasement in several models, Sleep Science latex owners claim that these mattresses offer little edge support and may sink at the edges prematurely; however, this is still better than the average latex model.

#

Edge Support

Despite the presence of an edge support encasement in several models, Sleep Science latex owners claim that these mattresses offer little edge support and may sink at the edges prematurely; however, this is still better than the average latex model.

#

Noise

Latex mattresses from Sleep Science are virtually silent when bearing weight.

#

Noise

Latex mattresses from Sleep Science are virtually silent when bearing weight.

#

Sex

As is the case with most latex models, Sleep Science mattresses are moderately responsive and may not be as suitable for sex as other mattress types.

#

Sex

As is the case with most latex models, Sleep Science mattresses are moderately responsive and may not be as suitable for sex as other mattress types.

#

Durability

According to our feedback, most Sleep Science memory foam mattresses have a lifespan of six to seven years; this is on par with the average durability for all mattresses.

#

Durability

According to our feedback, most Sleep Science memory foam mattresses have a lifespan of six to seven years; this is on par with the average durability for all mattresses.

#

Motion Isolation

The memory foam mattresses from Sleep Science isolate motion to a significant extent, and owners note fewer nighttime disruptions as a result.

#

Motion Isolation

The memory foam mattresses from Sleep Science isolate motion to a significant extent, and owners note fewer nighttime disruptions as a result.

#

Off-gassing

Off-gassing is one of the chief complaints regarding memory foam mattresses from Sleep Science.

#

Off-gassing

Off-gassing is one of the chief complaints regarding memory foam mattresses from Sleep Science.

#

Pressure Relief

Customer reports indicate that Sleep Science memory foam mattresses conform quite closely and relieve a significant amount of bodily pressure.

#

Pressure Relief

Customer reports indicate that Sleep Science memory foam mattresses conform quite closely and relieve a significant amount of bodily pressure.

#

Temperature Neutrality

Like most memory foam models, Sleep Science foam mattresses retain a fair amount of body heat and tend to sleep hot.

#

Temperature Neutrality

Like most memory foam models, Sleep Science foam mattresses retain a fair amount of body heat and tend to sleep hot.

#

Edge Support

Sleep Science memory foam owners claim their mattresses offer little edge support and may sink at the edges prematurely; however, this is still better than the average memory foam model.

#

Edge Support

Sleep Science memory foam owners claim their mattresses offer little edge support and may sink at the edges prematurely; however, this is still better than the average memory foam model.

#

Noise

Memory foam mattresses from Sleep Science are virtually silent when bearing weight.

#

Noise

Memory foam mattresses from Sleep Science are virtually silent when bearing weight.

#

Sex

As is the case with most memory foam mattresses, Sleep Science models are moderately responsive and may not be as suitable for sex as other mattress types.

#

Sex

As is the case with most memory foam mattresses, Sleep Science models are moderately responsive and may not be as suitable for sex as other mattress types.

What Type of Sleeper is Best Suited to a Sleep Science Mattress?

Based on our customer feedback, Sleep Science memory foam and latex mattresses received the following grades among sleepers of different weights and preferred sleep positions.

Please note that these ratings are subjective, and that everyone has varying experiences on different mattresses.

Sleeper comfort and spinal support are the most important factors when it comes to selecting a mattress.

For more information on sleeping positions please see our guides for side, back, stomach and combination sleepers.

  • Latex
  • Memory Foam
Weight Light Average Heavy
Sleep Position Less than 130 LBS 130 LBS - 230 LBS Greater than 230 LBS
Side
Back
Stomach
Weight Light Average Heavy
Sleep Position Less than 130 LBS 130 LBS - 230 LBS Greater than 230 LBS
Side
Back
Stomach

Compare Mattresses

Buying online is easier – check out similar mattresses to the Sleep Science mattress line.

Nectar Mattress

Botanical Bliss

Luma Mattress

T&N Mattress

MATTRESS TYPE FoamLatexHybridFoam
PRICE RANGE $799$1499-$2299$995$595
FIRMNESS OPTION 6.55.5,7.53.5,6,7.56.5
AVAILABILITY onlineonlineonlineonline
SLEEP TRIAL 365 nights100 nights100 nights100 nights
WARRANTY LENGTH Limited Lifetime25 Year, Limited10 Year10 Year, Non-prorated
Tap here to see more mattress stats

Mattress Technical Details

What You Need to Know About Sleep Science Mattresses

Construction and Firmness

The firmness rating of a Sleep Science mattress will vary by selected model. The table below features details about the components and dimensions of all 12 current Sleep Science mattress models.

Please note that certain specs are not available for select models (such as foam density and/or cover composition).

Firmness is rated on a scale of 1 to 10. For more information on how firmness is calculated, please visit our Mattress Firmness page.

Product Name Firmness Rating Thickness Support Core Components Comfort Layer Components Cover Components
Dream 3.5 (Soft) 8″ 3″ Polyfoam 3″ Memory Foam
2″ ‘Air Comfort’ Polyfoam
Bamboo Fabric Blend
Latex GL 3.5 (Soft) 9″ 5″ Soy-Infused Polyfoam 1″ Talalay Latex (21 ILD)
1″ Talalay Latex (19 ILD)
2″ Talalay Latex (24 ILD)
Not Disclosed
Natural Latex 5 (Medium) 9″ 6″ Talalay Latex (32 ILD) 3″ Talalay Latex (19 ILD) 61% Polyester
37% Organic Cotton
2% Spandex
Active Latex 6.5 (Medium Firm) 10″ 7″ Open-Cell Polyfoam 1 1/2″ Dunlop Latex (Soft)
1 1/2″ Dunlop Latex (Medium)
Not Disclosed
Active Studio 4 (Medium Soft) 10″ 7″ Polyfoam 1 1/2″ 4 PCF Memory Foam
1 1/2″ 3 PCF Memory Foam
Not Disclosed
Marina 3.5 (Soft) 10″ 5″ Polyfoam 3″ 3 PCF Gel Memory Foam
2″ ‘Air Comfort’ Polyfoam
Not Disclosed
Sleep Science 5 (Medium) 10″ 5″ Polyfoam 3″ Memory Foam
2″ Polyfoam
Not Disclosed
Black Diamond 6.5 (Medium Firm) 11″ 7″ Polyfoam 1″ 5 PCF Charcoal Bamboo Memory Foam
1″ Memory Foam
2″ Latex
Not Disclosed
Carina 5 (Medium) 11″ 6″ ‘Air Channel’ Polyfoam 2″ 3 PCF Gel Memory Foam
2″ 4 PCF Memory Foam
1″ Latex
Not Disclosed
Active Loft 4 (Medium Soft) 12″ 8″ Open-Cell Polyfoam 2″ 4 PCF Memory Foam (2 Layers) Not Disclosed
iFlip Sonoma (Reversible) 4 (Medium Soft) 12″ 4″ ‘Air Channel Polyfoam 2″ 3 PCF Memory Foam (10 ILD)
2″ ‘Air Comfort’ Polyfoam
Not Disclosed
6.5 (Medium Firm) 2″ 3 PCF Memory Foam (13 ILD)
2″ ‘Air Comfort’ Polyfoam
Not Disclosed
Ara 4 (Medium Soft) 13″ 6″ ‘Air Channel’ Polyfoam 3″ 5 PCF Memory Foam
3 5/8″ 5 PCF Memory Foam
3/8″ ‘Air Comfort’ Polyfoam
Not Disclosed

Availability

Sleep Science mattresses are exclusively available on Costco.com and in Costco’s brick-and-mortar stores. A nationwide store database is available online.

  • Sleep Trial Costco full refund return

  • Shipping All 50 states and Puerto Rico

  • Warranty 20-year

  • Made In USA

  • How is the Mattress Shipped?

    Sleep Science mattresses are compressed, rolled up, and shipped in a box.

  • Where Do They Ship?

    Sleep Science ships mattresses anywhere in the continental United States, as well as most addresses in Alaska, Hawaii, and Puerto Rico. A list of restricted delivery areas in Alaska, Hawaii, and Puerto Rico is available on Costco.com.

  • White Glove Delivery?

    Yes, offered free of charge for select models.

  • Full Shipping Details

    Delivery Fee: Standard shipping within the continental U.S. is free; deliveries to Alaska, Hawaii, or Puerto Rico will incur additional shipping charges. White Glove delivery is offered free of charge for select models; old mattress removal and disposal will incur a separate charge of $85.

    Delivery Policy: The delivery policy for Sleep Science is as follows:

    1. Sleep Science deliveries are coordinated through FedEx. The expected wait time varies by model. Some models typically ship within seven to 10 business days; others take up to two to four weeks.
    2. White Glove delivery includes in-home assembly and packaging waste removal; for an additional $85 fee, White Glove personnel will remove the customer’s old mattress and transport it to either a donation center or a recycling facility.
    3. Although Costco ships some mattresses to Alaska, Hawaii, and Puerto Rico, select Sleep Science models will only be shipped to one or two of these locations. Delivery surcharges for Alaska, Hawaii, and Puerto will be assessed during checkout.  
  • Old Mattress Removal

    Old mattress removal is offered for a fee of $85 with White Glove delivery; this service is not available with standard deliveries.

  • Trial Period and Guarantee

    Trial Period and Guarantee: Costco does not offer a sleep trial for any Sleep Science mattresses at this time. However, Costco will accept returns from any item purchased online or in a brick-and-mortar store in exchange for a full refund. Customers may drop off their mattress at a brick-and-mortar location; alternatively, they can coordinate their return online. Please note that Costco requires all customers to obtain annual membership before purchasing anything online or in a store; annual membership fees range from $60 to $120.

  • Warranty Details

    Warranty: Sleep Science offers a 20-year warranty for all current mattresses.

    1. Sleep Science does not indicate if the warranty is entirely nonprorated or divided into nonprorated and prorated periods. We have reached out to Sleep Science, and will update this section as soon as we receive this information.
    2. Sleep Science will, at their sole option, repair or replace any mattress that is deemed as defective for as long as the warranty is valid. Owners are responsible for all transportation and handling costs associated with mattress repairs or returns.
    3. Sleep Science mattresses are designed for use with certain types of foundational support. According to Sleep Science, improper support includes any ‘frame, bed rails or foundation without center support rails, and a solid, continuous surface’. Use of inadequate foundational support will void the warranty.
    4. If a defective mattress has been discontinued or is not in stock, Sleep Science reserves the right to replace it with another model of comparable quality and value.
    5. The mattress cover is protected under a separate two-year warranty.
    6. The warranty will cover the following mattress defects:
      • Visible sagging or indentations in the mattress surface measuring three-quarters of an inch (3/4″) or deeper.
      • Physical flaws in the mattress that cause the foam or latex to split or crack.
    7. The warranty will not cover the following:
      • Normal increases in mattress softness that do not affect its pressure-relieving abilities, or visible sagging or indentations in the mattress surface that do not three-quarters of an inch (3/4″) or deeper. These issues are considered normal wear and tear.
      • Burns, cuts, tears, stains, and other types of physical damage resulting from owner misuse, improper cleaning, and/or inadequate foundational support.
    8. This warranty exclusively extends to original owners who purchase their Sleep Science mattress directly from Costco or any other authorized retailer. Anyone who buys or acquires their mattress from the original owner or a non-authorized retailer will not receive warranty protection.

Company Information

  • Customer Service

    7 out of 10 owner experiences show customers have had a positive experience with Sleep Science, irrespective of whether or not they liked their mattress.

  • BBB Rating

    Sleep Science has not earned a grade from the Better Business Bureau; its parent company, South Bay International, has an A+ rating from the BBB.

  • Company History

    South Bay International was founded in 1993.

  • Physical Stores

    Costco operates brick-and-mortar locations across the United States; a full store database is available online.

  • Contact Sleep Science

    Corporate Address:
    South Bay International, Inc.
    2665 Pomona Boulevard
    Pomona, CA 91768-3221
    Phone Number: 1-800-723-0316 (Available Monday through Friday from 8am to 430pm PST)
    Contact Email: [email protected]
    Company Website: mysleepscience.com

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