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Based on 364 Consumer Experiences
THE GOOD: Value potential • customer service above average • Costco return policy.
THE BAD: Too firm for some, especially lighter people and side sleepers • initial off gassing odor and heat trap potential • longevity likely no better than fair on average • delivery time often significant.
THE MATTRESSES: Sleep Science – in business since 1993 – is an entry- to mid-priced mattress brand. Its 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 mattresses come roll packed and vacuum sealed.
THE RETAILER: Sleep Science is generally available only online, namely at Costco.com. See buying a mattress online: what you should know.
The ratings below are based on over 360 consumer reviews and experiences. The data was gathered using an unbiased, accurate methodology.
|Owner satisfaction||b-||Sleep Science memory foam beds have 79% owner satisfaction. Learn more.|
|Durability / longevity||C+||Durability / longevity appears to be average. Within three years of ownership, 10% of owners report sagging and or softening occurring to an extent that causes discomfort.|
|Price||b||Prices range from $280-$2200 depending on model and 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 (back) pain||b||About 20% 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.|
|Conforming ability||B||Mattress with high conforming ability often provide well-distributed and cradling support. Sleep Science models with 5 lbs-ft density memory foam or greater likely have high conforming ability especially for heavier persons. Models with 3 lbs-ft memory foam provide moderate conforming ability.|
|Easy to move on||C-||Models with higher-density, highly conforming foam can provide resistance to movement including changing positions. The lower-density models tend to provide less resistance.|
|Easy to get up off||b-||An edge support system makes 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 tendency of the beds to have above-average firmness 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 a significant 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-||At least 7% of owners say that Sleep Science beds act as a heat trap to a significant extent.|
|Good for sex||c||Memory foam bed owners often have differing thoughts on this issue. (See mattresses and sex for analysis).|
|Short break in period||D+||Patience may be required as break-in time is likely longer than average, especially for high-density models.|
|Large person friendly||b+||Thicker models, including those with at least a 6-inch base layer, tend to suit larger, heavier people (220+ lbs).|
|Small person friendly||c+||People who weigh less than 110 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.|
|Easy to move, handle, lift||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.|
|Low mainten- ance||B||The mattresses are "no-flip." But rotating them (from head to foot) may prevent or combat wear and sagging.|
|Warranty||A-||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.)|
|Specs disclosed||A||Sleep Science tends to provide comprehensive specifications for its mattresses. This allows consumers to know what they are paying for and helps them to comparison shop.|
|Return policy||a||Costco has a generous return policy. (See returning a mattress: what you should know.)|
|Customer service||a-||Sleep Science tends to have high-rated customer service.|
|Delivery time||d+||Delivery time can range from 4 days to 4 weeks depending on model.|
|Better Business Bureau rating||A+||The parent company, South Bay International, has maintained an A+ rating with the BBB with no consumer complaints.|
|SLTD company rating||B+||SLTD company rating is Sleep Like The Dead's letter grade for a company. The rating is based on several factors including product ratings by consumers, years in business, customer service, return policy, accuracy of marketing claims, transparency of specifications, warranty, Better Business Bureau (BBB) rating and rating stability, number of BBB complaints / business size ratio.|
Sleep Science memory foam beds have 79% owner satisfaction. This rate is above average compared to all mattresses (72%) and is about tied with all memory foam mattresses (80%).
The various Sleep Science models (see below) all tend to have similar satisfaction (79%).
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||Thick- ness||Firm- ness||Cover Material||Comfort & Support Layer||Base Layer|
|Dream 8"||$280 tw
|8"||med- firm||bamboo blend||3" 3lbs/ft memory foam;
2" regular foam
|3" regular foam|
|Comment: Not suited for larger, heavier people (230+ lbs). Ideally suited for temporary / occasional use.|
|10"||med- firm||jacquard fabric||3" 3lbs/ft memory foam;
2" regular foam
|5" regular foam|
|Comment: Good value potential, but ideally suited for temporary / occasional use.|
|12"||med||poly- ester blend||2" 4 lbs/ft memory foam;
2" 3 lbs/ft memory foam
|8" regular foam|
|Comment: Perhaps the softest model overall.|
|Black Diamond||$630 tw
|11"||med- firm||silk blend||2" 5 lbs/ft memory foam;
|7" regular foam|
|Comment: Uses bamboo charcoal fibers to neutralize moisture and fight odor.|
|13"||usually soft but suppor- tive||bamboo fabric||6.5" 5 lbs/ft memory foam||6" regular foam|
|Comment: Popular model due mainly to its value potential.|
|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.|
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: Tempur-Pedic 81% vs Sleep Science 79%.|
|Lifespan||C+||b+||Tempur-Pedic likely has at least 25% greater longevity on avg.|
|Affordable||B||d||Avg price for Tempur-Pedic is $3,310; Sleep Science $960.|
|Less (back) pain||b||b+||--|
|Model options||d||a||Tempur-Pedic has more firmness choices.|
|Conforming ability||b+||a-||Can vary by model, but both perform fairly similar.|
|Easy to move on||D+||c-||Can vary by model, but overall both rate similar.|
|No initial odor||d+||d+||Both can have significant off gassing.|
|No sleeping hot||C-||c-||--|
|Good for sex||c||c||--|
|Short break in period||D+||D+||Can vary by model as higher-density models often have a longer break in.|
|Easy to move, handle, lift||d+||d||--|
|Specifications disclosed||A||D||Sleep Science often discloses far more information about their mattresses.|
|Warranty||A-||C||Sleep Science is 20-year vs 10 year for Tempur-Pedic.|
|BBB rating||a+||A+||Ratings for both are stable.|
|Customer service||a-||b||Advantage to Sleep Science.|
|Density (lbs/ft)||3.0 to 7.0||3.0 to 7.0||--|
The Sleep Science mattress ratings are based on over 360 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 average based on limited owner experience data.
– 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.
– 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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