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unbiased Sleep Science Memory Foam Mattress Review, Ratings and Comparisons

Based on 291 Actual Consumer Experiences

March 18, 2014
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What You Need To Know

THE GOOD: Sleep Science memory foam mattresses tend to have strong value potential. Reports of sleeping hot are limited. Costco's return policy is excellent.

THE BAD: The beds are too firm for some, especially lighter people. Off gassing / initial odor is possible. Delivery time can be significant.

THE MATTRESS: Sleep Science – in business since 1993 – is an entry- to mid-priced mattress brand. The various memory foam models have 3 to 6.6 inches of of 7, 5, or 3 lbs/ft memory foam over 3 to 9 inches of support foam. (See memory foam density: higher vs lower to learn about the characteristics of different densities.)

THE COMPETITION: See how Sleep Science stacks up to the competition in the memory foam mattress reviews – summary. Also see the Sleep Science vs Tempur-Pedic comparison below.

THE RETAILER: Sleep Science mattresses are generally available only online, namely at Costco.com. See buying a mattress online: what you should know.

Sleep Science Mattress Ratings

The ratings below are based on over 290 consumer reviews and experiences. The data was gathered using an unbiased, accurate methodology.

Owner satisfaction b Sleep Science memory foam beds have 78% owner satisfaction. (78 out of 100 based on 291 reviews). This rate is above average compared to mattresses overall (72%), but slightly below average compared to memory foam mattresses overall (81%).

ara mattress comparison chart

The various Sleep Science models tend to have similar owner satisfaction.
Durability / longevity C+ Based on limited long-term owner experience data, durability and longevity appear to be somewhat better than average. Within three years of ownership, 12% of owners report the mattress becoming excessively soft, and about 9% of owners report the development of body impressions or an uneven sleep surface.
Affordability / price b Prices range from $310-$2200 depending on mattress size. A foundation is an additional $200-$400. At least 15% of owners praise Sleep Science for its value and general comparability to the more expensive Tempur-Pedic. (See comparison below.)
Less pain b At least 25% of owners report less pain, especially less back pain, but about 12% report increased pain usually from excessive firmness. (See mattresses and pain relief for general analysis.)
Firmness variety d Sleep Science offers limited firmness options. Most owners regard their bed as medium-firm. As the mattresses wear and age, however, they may soften considerably.
Contours to body b Models with 7 lbs-ft and 5 lbs-ft density memory foam likely will provide moderate to strong contouring and molding to the body, especially for heavier persons. Models with 3 lbs-ft memory foam will provide only moderate contouring and molding.
Easy to move on c- Due to the fact that several models use higher-density foam, a significant number of owners complain of difficulty of movement including changing positions.
Easy to get up off b- An edge support system firms up the edges of the bed making it easier to get up off the bed; it also allows for more supportive sleeping near the sides.
Back sleep friendly b+ The beds tend to be suitable for most back sleepers.
Side sleep friendly c+ The above-average firmness of the beds may result in a lack of comfort for some side sleepers.
Stomach sleep friendly b The beds tend to be suitable for most stomach sleepers.
Motion isolation a The beds perform well in regard to absorbing motion from one person so that another person on the bed is not much disturbed.
No initial odor / off gassing d+ About 12% of owners report an initial odor. This rate is consistent with high-density memory foam mattresses overall. (See memory foam off gassing for more analysis.)
No sleeping hot c There are currently no more than an average number of complaints regarding Sleep Science beds acting as a heat trap.
Good for sex c Memory foam bed owners often have differing thoughts on this issue. (See mattresses and sex for analysis).
Large person friendly b+ Thicker models, including those with at least a 6-inch base layer, tend to suit larger, heavier people (200 lbs+).
Small person friendly c+ People who weigh less than 120 lbs may find the higher density models (those with 7 lbs-ft and 5 lbs-ft density memory foam) to lack conforming ability and pressure point relief.
No noise a- Sleep Science mattresses are silent under all conditions, but the foundation may creak or squeak.
Lightweight d+ Heavy weight is a top complaint for Sleep Science mattresses and higher-density memory foam mattresses in general. Thicker, and higher density models can weigh over 120 lbs.
Warranty b The warranty length is 20 years which is as good or better than the warranties of other mattresses in Sleep Science's price range. (See mattress warranties: what you should know.)
Return policy a Costco has a generous return policy. (See returning a mattress: what you should know.)
Customer service a- Sleep Science generally has high-rated customer service.
Delivery time d The mattress can take 2-4 weeks to be delivered which is considerably longer than average.
Better Business Bureau rating A+ The parent company, South Bay International, currently has an accredited A+ rating with the BBB.
SLTD company reputation rating B+ The parent company, South Bay International, receives a company reputation rating of "B+" from Sleep Like The Dead (SLTD). This rating is based on a combination of factors including product ratings by consumers, years in business, customer service, return policy, accuracy of marketing claims, warranty, Better Business Bureau (BBB) rating and rating stability, number of BBB complaints / business size ratio.

Sleep Science Model Prices, Specifications & Comments

The following Sleep Science mattresses are currently sold at Costco.com. Prices do not include a foundation. Important: The firmness description for each mattress is an estimate or indicates what tends to be true for owners overall; your personal evaluation may differ.

  Prices Thickness Firmness Cover Material Comfort & Support Layer Base Layer
Escape $1800 qn
$2200 kg
14.5" med-firm bamboo fabric 1" quilting foam pillow top;
2" 7 lbs/ft memory foam;
3" 5 lbs/ft memory foam
9" regular foam
Comment: Has thick base layer making it well suited for larger, heavier people (220 lbs+). The mattress itself is heavy – 135-175 lbs depending on size.
Ara $1000 full
$1100 qn
$1300 kg
13" usually soft but supportive bamboo fabric 6.5" 5 lbs/ft memory foam 6" regular foam
Comment: Popular model due mainly to its value potential.
Black Diamond $630 tw
$700 full
$900 qn
$1150 kg
11" med-firm silk blend 2" 5 lbs/ft memory foam;
2" latex
7" regular foam
Comment: Uses bamboo charcoal fibers to neutralize moisture and fight odor.
Astoria $530 tw
$650 full
$730 qn
$930 kg
12" med polyester blend 2" 4 lbs/ft memory foam;
2" 3 lbs/ft memory foam
8" regular foam
Comment: Has two layers of different density memory foam which is fairly sophisticated for a bed in this price range.
10" $400 tw
$570 full
$600 qn
$750 kg
10" med-firm jacquard fabric 3" 3lbs/ft memory foam;
2" regular foam
5" regular foam
Comment: Good value potential.
Dream 8" $310 tw
$420 full
$450 qn
$570 kg
8" med-firm polyester 3" 3lbs/ft memory foam;
2" regular foam
3" regular foam
Comment: Not well suited for larger, heavier people (200 lbs+).

Sleep Science Vs Tempur-Pedic Comparison

Tempur-Pedic is often the standard by which other memory foam mattresses are judged. The table below shows how Sleep Science beds overall compare to Tempur-Pedic beds overall based on over 2,000 actual owner experiences.

  Sleep Science Tempur-Pedic comment
Owner satisfaction b b Both have similar satisfaction rates.
Lifespan C+ b Tempur-Pedic likely has twice the lifespan of Sleep Science.
Affordable B d+ Avg price for Tempur-Pedic is $3,238; Sleep Science $930.
Less pain b b+ --
Firmness variety d a Tempur-Pedic has more firmness choices.
Motion isolation a a --
Contours to body b+ a- Both perform fairly similar.
Easy to move on C- c- --
No initial odor d+ d+ Both can have significant off gassing.
No sleeping hot c c- Both perform fairly similar.
Good for sex c c --
No noise a a --
Lightweight d+ d- Both have above-average weight.
Warranty b+ C Sleep Science has a 20-year warranty vs a 10 year for Tempur-Pedic.
BBB rating a+ a+ Both are strong and stable.
Customer service a- b Advantage to Sleep Science.
Density (lbs/ft) 3.0 to 7.0 2.5 to 7.0 --

About our unbiased Sleep Science mattress review and research

Our Sleep Science mattress ratings are based on over 290 consumer reviews and experiences. 85% of our consumer data was collected from costco.com.

Find out more about our research methodology and sources.


– Durability and longevity for Sleep Science mattresses appears to be fair or better based on limited owner experience data.

– Sleep Science mattresses acting as a heat trap tends to not be a significant consumer complaint.

– Heavy mattress weight is a main consumer complaint for both Sleep Science beds and high-density memory foam beds in general.

– At least 15 percent of owners praise Sleep Science for its value and general comparability to the more expensive Tempur-Pedic brand.

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