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Twin XL Firm 11" Innerspring Mattress - Sealy Posturepedic Mill Park Ultra Tight Top & Box Spring Set | 80 H x 38 W 11 D in Wayfair 42952431

This mattress features the trusted motion-reducing encased coils and targeted memory foam support of similar Posturepedic Spring mattresses with an ultra firm feel. A reinforced edge improves durability, while cover treatments help to keep you cool,... more

Mattress Foundation - Low Profile, Twin Extra Long - Ballard Designs

Take your nighttime comfort to the next dreamy level with our luxurious and supportive Mattress Foundations. Box edge frames are hand built by Amish craftsmen from solid spruce wood in three profiles, Slim, Low and High, to custom fit your bed and... more

Mattress Foundation - High Profile, Twin Extra Long - Ballard Designs

Take your nighttime comfort to the next dreamy level with our luxurious and supportive Mattress Foundations. Box edge frames are hand built by Amish craftsmen from solid spruce wood in three profiles, Slim, Low and High, to custom fit your bed and... more

Mattress Foundation - Slim Profile, Twin Extra Long - Ballard Designs

Take your nighttime comfort to the next dreamy level with our luxurious and supportive Mattress Foundations. Box edge frames are hand built by Amish craftsmen from solid spruce wood in three profiles, Slim, Low and High, to custom fit your bed and... more

Twin XL 12" Innerspring Mattress - Sealy Soft Tight Top & Box Spring Set | 80 H x 38 W 12 D in Wayfair 42951131

An upgraded spring mattress with motion-reducing encased coils targeted back and core support and a reinforced edge for increased durability. The antibacterial, soft knit cover helps to keep you cool and your mattress protected. Soft feel. Mattress... more

Twin XL Medium 15" Innerspring Mattress - Sealy Posturepedic Mill Park Pillow Top | 80 H x 38 W 15 D in Wayfair 52953531

This Euro Pillow Top mattress features the trusted motion-reducing encased coils and targeted memory foam support of similar Posturepedic Spring mattresses with a medium feel. A reinforced edge improves durability, while cover treatments help to keep... more

Twin XL Firm 13" Mattress - Brooklyn Bedding Plank Luxe Two Sided Firm/Ultra w/ Cooling Cover | 80 H x 38 W 13 D in Wayfair BBPLHYCT33XL

The flippable Plank Luxe is designed to be the firmest mattress on the market—pairing all of the benefits of the original Plank with the additional responsiveness and pressure point relief of individually encased coils. Put simply, the construction of... more

Twin XL Medium 15" Innerspring Mattress - Sealy Posturepedic Mill Park Pillow Top & Box Spring Set | 80 H x 38 W 15 D in Wayfair 42953631

This Euro Pillow Top mattress features the trusted motion-reducing encased coils and targeted memory foam support of similar Posturepedic Spring mattresses with a medium feel. A reinforced edge improves durability, while cover treatments help to keep... more

Twin XL Medium 12.5" Innerspring Mattress - Sealy Posturepedic Mill Park Tight Top & Box Spring Set | 80 H x 38 W 12.5 D in Wayfair 42952631

This mattress features the trusted motion-reducing encased coils and targeted memory foam support of similar Posturepedic Spring mattresses with a medium feel. A reinforced edge improves durability, while cover treatments help to keep you cool, and the... more

Twin XL Medium 13" Hybrid Mattress - Tempur-Pedic LuxeBreeze® | 80 H x 38 W 13 D in Wayfair 10238231

The all-new mattress feels up to 10° cooler. Featuring our newest and most advanced plus material that absorbs and pulls heat away from your body, it works with specialized cool-to-the-touch covers to stay measurably cooler all night. (Based on average... more

Twin XL Medium 12" Innerspring Mattress - Sealy Posturepedic Mill Street Tight Top & Box Spring Set | 80 H x 38 W 12 D in Wayfair 42950631

Featuring trusted Sealy quality with targeted back and core support, a reinforced edge for increased durability, and an antibacterial soft knit cover that wicks away moisture and keeps the mattress protected. Medium feel. Box Spring Height: 5, Mattress... more

Twin XL Medium 12" Hybrid Mattress - Tempur-Pedic ProBreeze® | 80 H x 38 W 12 D in Wayfair 10242231

Experience has proven, all-night cooling with the all-new Tempur-probreeze® mattress. Featuring specialized cool-to-the-touch covers that work with our exclusive pure cool® material to help pull heat away from your body so you stay cooler -all night... more

Twin XL Medium 15" Innerspring Mattress - Sealy Posturepedic Mill Park Pillow Top & Box Spring Set | 80 H x 38 W 15 D in Wayfair 42953531

This Euro Pillow Top mattress features the trusted motion-reducing encased coils and targeted memory foam support of similar Posturepedic Spring mattresses with a medium feel. A reinforced edge improves durability, while cover treatments help to keep... more

Twin XL Firm 12" Innerspring Mattress - Sealy Posturepedic Mill Road Tight Top | 80 H x 38 W 12 D in Wayfair 52950731

An upgraded spring mattress with motion-reducing encased coils targeted back and core support, and a reinforced edge for increased durability. The antibacterial, soft knit cover helps to keep you cool, and your mattress protected. Firm feel. Mattress... more

Twin XL 15" Foam Mattress - Sealy Posturepedic Mill Park Plush Pillow Top & Box Spring | 80 H x 38 W 15 D in Wayfair 42953831

This Euro pillow top mattress features the trusted motion-reducing encased coils and targeted memory foam support of similar Posturepedic Spring mattresses with a soft feel. A reinforced edge improves durability, while cover treatments help to keep you... more

Twin XL Medium 13" Innerspring Mattress - Sealy Posturepedic Mill Road Faux Euro Top & Box Spring Set | 80 H x 38 W 13 D in Wayfair 42951531

An upgraded faux Euro top spring mattress with motion-reducing encased coils targeted back and core support, and a reinforced edge for increased durability. The antibacterial, soft knit cover helps to keep you cool, and your mattress protected. Medium... more

Twin XL Medium 12.5" Innerspring Mattress - Sealy Posturepedic Mill Park Tight Top & Box Spring Set | 80 H x 38 W 12.5 D in Wayfair 42952531

This mattress features the trusted motion-reducing encased coils and targeted memory foam support of similar Posturepedic Spring mattresses with a medium feel. A reinforced edge improves durability, while cover treatments help to keep you cool, and the... more

Twin XL Medium 13" Innerspring Mattress - Sealy Posturepedic Mill Road Faux Euro Top & Box Spring Set | 80 H x 38 W 13 D in Wayfair 42951631

An upgraded faux Euro top spring mattress with motion-reducing encased coils targeted back and core support, and a reinforced edge for increased durability. The antibacterial, soft knit cover helps to keep you cool, and your mattress protected. Medium... more

Twin XL Firm 14" Innerspring Mattress - Sealy Posturepedic Mill Park Faux Euro Top & Box Spring Set | 80 H x 38 W 14 D in Wayfair 42952931

This Faux Euro Top mattress features the trusted motion-reducing encased coils and targeted memory foam support of similar Posturepedic Spring mattresses with a firm feel. A reinforced edge improves durability, while cover treatments help to keep you... more

Twin XL Medium 14" Innerspring Mattress - Sealy Posturepedic Mill Road Pillow Top & Box Spring Set | 80 H x 38 W 14 D in Wayfair 42952031

An upgraded Euro Pillow Top spring mattress with motion-reducing encased coils targeted back and core support, and a reinforced edge for increased durability. The antibacterial, soft knit cover helps to keep you cool, and your mattress protected.... more

Twin XL Firm 12" Innerspring Mattress - Sealy Posturepedic Mill Road Tight Top & Box Spring Set | 80 H x 38 W 12 D in Wayfair 42950831

An upgraded spring mattress with motion-reducing encased coils targeted back and core support, and a reinforced edge for increased durability. The antibacterial, soft knit cover helps to keep you cool, and your mattress protected. Firm feel. Box Spring... more

Twin XL Waterbed Mattress - Strobel Winners Nyquist K-Rail No Cover Complete Set 25" Waveless Deep fill Soft-side Mattress, | 25 H x 38 W 80 D Wayfair

Strobel’s super-premium and the best softside waterbed on the market has their Patented Leak-Proof Double Wall Hydro Support 1800 waterbed mattress for super wavelesness and added peace of mind. Strobel Hydro Support Waterbeds feature their Feathertop... more

Twin XL 9" Waterbed Mattress - Strobel Winners Funy Cide No Cover Top Only Waveless Shallow fill Soft-side Mattress, | 9 H x 38 W 80 D Wayfair

Strobel’s shallow fills soft sides feature water tube systems. These tubes can be taken to the sink to be filled or drained and give more flexibility for moving the bed. Inner support rails are fabric-covered and made from soy-based foam and engineered... more

Twin XL Medium 12" Gel/Foam Mattress - Spinal Solution 12-Inch Gel w/ Zipper, Removable & Washable Cover, Breathable | 80 H x 60 W 12 D in Wayfair

This luxurious twelve-inch mattress is truly one-of-a-kind. It blends cooling gel and natural crushed pearls directly into the premium memory foam. Unique cooling fibers are woven into the cover, which neutralizes temperature variations while you... more

Twin XL 10" Waterbed Mattress - Strobel Winners Applo Cotton Cover Top Only Waveless Shallow fill Soft-side in Brown | 10 H x 38 W 80 D Wayfair

Strobel’s shallow fill softsides feature water tube systems. These tubes can be taken to the sink to be filled or drained and give more flexibility for moving the bed. Inner support rails are fabric covered and made from Soy based foam and engineered... more

Twin XL Medium 13" Gel/Foam Mattress - Spinal Solution 13-Inch Hybrid-Medium Plush Gel w/ Zipper, Washable Cover, Breathable, Soft | 80 H x 38 W 13 D in Wayfair

This luxurious thirteen-inch mattress blends cooling gel and natural pearls into premium memory foam and is supported by a foam-encased coil system for lofty conforming comfort. Specialty cooling fibers are woven into the cover, which neutralizes... more

Alwyn Home Mccollum 0.68-Inch Standard Mattress Support Wooden Bunkie Board/Slats w/ Cover Wood in Brown | 0.75 H x 60 W x 78 D in | Wayfair

The standard wooden slats provide an excellent surface foundation for any platform beds, bunks, and daybeds. It adds support to any mattress type and will keep the mattress stay in good shape thus extending the life of your mattress. The wooden slats... more

Twin XL Waterbed Mattress - Strobel Winners Applo Cotton Cover Complete Set 26" Waveless Shallow fill Soft-side in Brown | 26 H x 38 W 80 D Wayfair

Strobel’s shallow fill softsides feature water tube systems. These tubes can be taken to the sink to be filled or drained and give more flexibility for moving the bed. Inner support rails are fabric covered and made from soy based foam and engineered... more

Twin XL Medium 13" Gel/Foam Mattress - Spinal Solution 13-Inch Hybrid-Medium Plush Gel w/ Zipper, Washable Cover, Breathable, Soft | 80 H x 38 W 13 D in Wayfair

This luxurious thirteen-inch mattress blends cooling gel and natural pearls into premium memory foam and is supported by a foam-encased coil system for lofty conforming comfort. Specialty cooling fibers are woven into the cover, which neutralizes... more

Twin XL Waterbed Mattress - Strobel Winners Sea Hero K-Rail Cotton Cover Complete Set 26" Waveless Deep fill Soft-side | 26 H x 38 W 80 D Wayfair

Strobel’s super-premium and the best softside waterbed on the market has their Patented Leak-Proof Double Wall Hydro Support 1800 waterbed mattress for super wavelesness and added peace of mind. Strobel Hydro Support Waterbeds feature their Feathertop... more

Twin XL 10" Waterbed Mattress - Strobel Winners Sea Hero K-Rail Cotton Cover Top Only Waveless Deep fill Soft-side in Brown | 10 H x 38 W 80 D Wayfair

Strobel’s super-premium and the best soft side waterbed on the market have our Patented Leak-Proof Double Wall Hydro Support 1800 waterbed mattress for super waveless and added peace of mind. Strobel Hydro Support Waterbeds feature our Feathertop deep... more

Twin XL Waterbed Mattress - Strobel Winners Sea Hero K-Rail Cotton Cover Complete Set 26" Waveless Deep fill Soft-side | 26 H x 38 W 80 D Wayfair

Strobel’s super-premium and the best softside waterbed on the market has their Patented Leak-Proof Double Wall Hydro Support 1800 waterbed mattress for super wavelesness and added peace of mind. Strobel Hydro Support Waterbeds feature their Feathertop... more

Twin XL 10" Waterbed Mattress - Strobel Winners Nyquist K-Rail No Cover Top Only Waveless Deep fill Soft-side in Brown | 10 H x 38 W 80 D Wayfair

Strobel’s super-premium and Strobel think the best soft side waterbed on the market has their Patented Leak-Proof Double Wall Hydro Support 1800 waterbed mattress for super waveless and added peace of mind. Strobel Hydro Support Waterbeds feature their... more

Twin XL Medium 14" Gel Mattress - BRN Kruger Cooling Memory Edge Support Pocket Spring Removable Cover Hybrid | 41.7 H x 38 W 14 D in Wayfair

This 14” hybrid mattress is meticulously crafted for those in pursuit of an exceptional sleep experience. This mattress boasts thicker layers of gel-infused, cooling memory foam and high-density memory foam, delivering an extra level of comfort to... more

Twin XL Medium 12" Gel Mattress - BRN Hopewell Cooling Memory Edge Support Pocket Spring Removable Cover Hybrid | 71.7 H x 38 W 12 D in Wayfair

This 12" hybrid mattress is your key to a night of restful and rejuvenating sleep. An additional layer of memory foam enhances contouring comfort, perfectly complemented by a gel-infused cooling layer to maintain an optimal sleep temperature throughout... more

Twin XL Waterbed Mattress - Strobel Winners Funy Cide No Cover Complete Set 25" Waveless Shallow Fill Soft-side in Brown | 25 H x 38 W 80 D Wayfair

Strobel’s shallow fills soft sides feature water tube systems. These tubes can be taken to the sink to be filled or drained and give more flexibility for moving the bed. Inner support rails are fabric-covered and made from soy-based foam and engineered... more

Twin XL Medium 12" Gel/Foam Mattress - Spinal Solution 12-Inch Gel w/ Zipper, Removable & Washable Cover, Breathable | 80 H x 60 W 12 D in Wayfair

This luxurious twelve-inch mattress is truly one-of-a-kind. It blends cooling gel and natural crushed pearls directly into the premium memory foam. Unique cooling fibers are woven into the cover, which neutralizes temperature variations while you... more

Twin XL Medium 10" Gel Mattress - BRN Cooling Memory Edge Support Pocket Spring Removable Cover Hybrid | 41.7 H x 38 W 10 D in Wayfair DU10TX

This 10” hybrid mattress is a perfect fusion of support and comfort tailored for rejuvenation. At its core, a 7-inch pocket coil spring system provides robust support and optimal body alignment, setting the foundation for a night of blissful sleep.... more