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Many king mattress owners notice their bed losing firmness over time, prompting a search for reliable upgrades without the full cost of a new mattress. The Tempur-Pedic Mattress Topper 11386170 King stands out with its 3-inch Tempur material memory foam and cooling design, sized at 79 x 75 x 3 inches to fit standard king beds precisely. Installation is straightforward—unroll it onto the mattress, and it expands within minutes—no tools or special setup required.
Performance-wise, it addresses common concerns like heat retention and inconsistent support, offering adaptive contouring that holds up through nightly use. While the upfront price reflects premium materials, its durability means fewer replacements long-term. This review breaks down real-user experiences on comfort, cooling effectiveness, and value, plus tips for setup and maintenance to help weigh if it matches your sleep needs.
The Tempur-Pedic Mattress Topper 11386170 King, known as the TEMPUR-Adapt + Cooling 3-Inch model, adds a layer of pressure-relieving memory foam to existing mattresses. Measuring 79 x 75 x 3 inches, it fits standard king-size beds precisely, transforming sleep surfaces that have lost firmness over time. Back sleepers or those with joint discomfort often find this topper restores a supportive feel without needing a full mattress replacement.
Its Tempur material memory foam conforms closely to body contours, providing deep cradling that eases pressure points during long nights. The cooling technology helps dissipate heat, making it suitable for warmer sleep environments where traditional foam might trap body warmth. Staytight corner straps secure it firmly, preventing shifts even on deeper mattress profiles up to 14 inches thick.
In everyday use, couples appreciate how the medium-firm density minimizes motion transfer, allowing one partner to move without disturbing the other. The washable cover simplifies maintenance, as spot cleaning or machine washing keeps it fresh after years of nightly compression. Those upgrading an older innerspring mattress notice improved spinal alignment right away.
Practical testing reveals the topper excels in moderate climates but may feel less breathable during extreme summer heat for very hot sleepers. Setup takes under five minutes—just unroll and let it expand for 24-48 hours to reach full loft. Hot sleepers might layer it with breathable sheets for optimal results.
For side sleepers weighing under 200 pounds, the medium density offers plush hip and shoulder relief without sinking too deeply. Heavier individuals sometimes prefer firmer options, as this model provides balanced support rather than ultra-contouring plushness. It pairs well with hybrid mattresses, enhancing their responsive feel.
The premium foam maintains shape after months of use, resisting the sagging common in cheaper alternatives. Users traveling with it for hotel stays report it revives stiff temporary beds effectively. However, its weight—around 30 pounds—makes solo handling on king sizes a two-person task.
Daily scenarios like recovering from workouts highlight its muscle-soothing benefits, as the adaptive foam molds to sore spots overnight. Allergy sufferers value the hypoallergenic cover, which zips off easily for thorough cleaning. It suits guest rooms too, elevating basic setups to hotel-like comfort.
While not water-resistant, prompt spill cleanup prevents issues, and the foam's closed-cell structure limits dust mite buildup. Long-term owners note consistent performance through 5+ years, aligning with the manufacturer's warranty for original purchasers. Lighter sleepers transitioning from firm surfaces adjust quickest.
Those with adjustable bases find the topper flexes smoothly without bunching, preserving bed functionality. It addresses common complaints like mattress lumps by creating a uniform sleep plane. Budget-conscious buyers weighing longevity against cost see value in its durability over frequent replacements.
For combination sleepers, the responsive recovery time between positions feels natural, unlike slower-viscosity foams. Pet owners report it holds up to light jumping without permanent dents. Overall, it fits active adults seeking reliable pressure relief in home or travel settings.
Yes, its cooling technology helps dissipate heat, providing a more comfortable sleep surface for those who overheat at night. The medium density offers balanced support without trapping warmth.
TEMPUR material is a premium, proprietary foam originally developed by NASA. It molds precisely to your body for superior pressure relief and motion isolation compared to standard foams.
Absolutely, with dimensions of 79 x 75 x 3 inches, it fits standard king mattresses snugly, adding a layer of luxury without slipping out of place.
Yes, the cover is designed to be easily removed and washed, keeping your topper fresh and clean over time with simple maintenance.
It typically expands fully within 24-72 hours. Allow it to air out in a well-ventilated room for the best results before use.
Many users report relief from back pain due to its adaptive support that contours to pressure points, promoting spinal alignment during sleep.
The Tempur-Pedic TEMPUR-Adapt + Cooling 3-Inch King Mattress Topper Medium Luxury Premium Foam shines for couples seeking motion isolation, hot sleepers needing cooling comfort, and anyone wanting to refresh an older mattress without a full replacement. With over 300 recent purchases, it delivers proven TEMPUR quality in a practical 3-inch profile. If you value pressure-relieving support and a washable design, this topper is a worthwhile investment for enhanced nightly rest.
Pros/Cons
Pros
Made with Tempur Material Memory Foam for adaptive comfort
Cooling technology helps regulate temperature during sleep
3-inch thickness enhances mattress comfort
King size perfectly fits standard king mattresses
Washable cover for easy maintenance
Staytight corner straps secure it to the mattress
Cons
Not water resistant
High cost typical for premium memory foam toppers
May retain heat despite cooling features
Complex warranty limited to original purchasers from authorized retailers
| Specification | Details |
|---|---|
| Brand Name | Tempur-Pedic |
| Age Range Description | Adult |
| Model Name | Mattress Topper |
| Number of Items | 1 |
| Manufacturer | Tempur-Pedic |
| UPC | 841230094199 841230062938 |
| Global Trade Identification Number | 00841230062938 |
| Manufacturer Part Number | 11386170 |
| Model Number | 11386170 |
| Manufacturer Warranty Description | This Limited Warranty is valid only in connection with the original purchase of new products from authorized retailers and extends from the original purchase date of the original product purchased. An “original purchaser,” for the purposes of this Limited Warranty, is an individual or entity who purchases the product directly from Tempur-Pedic or an authorized retailer of Tempur-Pedic with the intent to use the product for personal consumer use and not for commercial or industrial use and not with the intent to resell the product. An “authorized retailer,” for purposes of this Limited Warranty, is an individual or entity authorized by Tempur-Pedic to sell product directly to original purchasers. An individual or entity that purchases the product from whatever source with the intent to resell the product is an unauthorized reseller (“unauthorized reseller”)". |
| Included Components | Staytight corner straps |
| Item Type Name | Soft Luxury Premium Foam, Washable Cover |
| ASIN | B07V5K36FL |
| Other Special Features of the Product | Premium |
| Closure Type | White |
| Water Resistance Level | Not Water Resistant |
| Fabric Type | Tempur Material Memory Foam |
| Product Care Instructions | Machine Wash |
| Material Type | Memory Foam |
| Size | King |
| Color | White |
| Brand | Tempur-Pedic |
| Special Feature | Premium |
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