Furniture › Bedroom Furniture › Mattresses & Boxsprings › Twin Extra Long › 3 1 2 h x

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 13" Waterbed Mattress - Strobel Winners Strike the Gold K-Rail 2.5-in Pillowtop Top Only Waveless Deep fill Soft-side Mattress, | 13 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 Firm 15.5" Hybrid Mattress - Kingsdown Vintage Cushion Euro Pillow Top | 80.8 H x 38.3 W 15.5 D in Wayfair FG-36008-PT1-TL

The quintessential expression of luxury sleep. This will quickly become your sanctuary for deep, restorative sleep. With just the right combination of support and unique comfort features, this mattress is in a class of its own. With a gorgeous... more

Twin XL 15" Hybrid Mattress - Alwyn Home Glynis Two-Sided Plush Mattress, Fiberglass | 80 H x 39 W 15 D in Wayfair 6D69137EC8C0401497709F96EBF6542A

This flippable, natural, organic mattress is twice as nice. GREENGUARD gold-certified, this hybrid mattress is constructed using up to 1, 089 pocketed support coils with side support. The flippable, all-natural construction eliminates the need for... more

Twin XL Waterbed Mattress - Strobel Winners Chrarismatic K-Rail 1.5-in Pillowtop Complete Set 28" Waveless Deep fill Soft-side | 28 H x 38 W 80 D Wayfair

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

Twin XL Medium Firm 11.5" Gel/Foam Mattress - Tuft & Needle Mint Gel Foam Mattress, Ceramic | 80 H x 39 W 11.5 D in Wayfair 910810163-8020

With two sleepers in mind, we designed the mint mattress with an extra layer of patented T&N adaptive foam technology and reinforced support edges. These provide personalized softness, medium-firm support, and heat regulation for deep, restful sleep.... more

Twin XL 14" Memory Foam Mattress - Strobel Winners Citation 3-in Pillowtop Top Only Waveless Shallow fill Soft-side Waterbed | 14 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 Memory Foam Mattress - Strobel Winners Citation 3-in Pillowtop Complete Set 30" Waveless Shallow fill Soft-side Waterbed | 30 H x 38 W 80 D Wayfair

Strobel’s shallow fill 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 14" Memory Foam Mattress - Strobel Winners Bold Venture K-Rail 3-in Pillowtop Top Only Waveless Deep fill Soft-side Waterbed | 14 H x 38 W 80 D Wayfair

Strobel’s super-premium and Strobel think 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... more

Twin XL Medium 11" Hybrid Mattress - Spinal Solution Mattress, Cotton | 74 H x 44 W 11 D in Wayfair 2300-3/8-1

Make a major purchase now! Here at our heavens, you'll find a few signature selections. We can mold all types of goods and furniture to fit your house, from memory foam to cotton and even custom hybrid. We designed the purest formulation possible... more

Twin XL Medium 14" Gel/Foam Mattress - Gel Memory Foam ComforPedic Loft from Beautyrest | 80 H x 38 W 14 D in Wayfair 35602-04785-WF

Elevate your sleep experience with the Comforpedic Loft from Beautyrest gel memory foam mattress. This upscale gel memory foam mattress provides three layers of support for a luxuriously comfortable sleeping experience. The gel memory foam mattress has... more

Twin XL Medium 3" Gel/Foam Mattress - Alwyn Home Mokena Gel Memory Foam Sofa Bed | 78 H x 38 W 3 D in Wayfair EE20C1F60D184C9F9BE3E8AC85DA85BB

This portable mattress features a cutting-edge gel memory foam that contours to your body, providing a luxurious and supportive sleep experience. The gel memory foam not only cradles you in comfort but also regulates temperature, ensuring a cool and... more

Twin XL 12" Gel/Foam Mattress - Slumber Solutions Respond NRGel Memory Foam | 80 H x 38 W 12 D in Wayfair 35602-04431-WF

This 12” Slumber Solutions Respond mattress will bring plush opulence to your nights. With 2” of our “made in the US” NRGel, you can feel the mattress gently respond to your movements. While maintaining the benefits of gel memory foam, our NRGel is a... more

Twin XL Firm 2" Memory Foam Mattress - Alwyn Home Oreana Plush | 80 H x 39 W 2 D in Wayfair DFD74EFF401C47949DCB20633C540C74

This memory foam mattress topper boasts a unique structure that combines a gel-infused memory foam layer and down alternative fillings. This design ensures weight distribution is even and pressure is relieved from different points of the body. It's an... more

Twin XL Firm 2" Memory Foam Mattress - Alwyn Home Oreana Plush | 80 H x 39 W 2 D in Wayfair DFD74EFF401C47949DCB20633C540C74

This memory foam mattress topper boasts a unique structure that combines a gel-infused memory foam layer and down alternative fillings. This design ensures weight distribution is even and pressure is relieved from different points of the body. It's an... more

Twin XL Firm 14" Gel/Foam Mattress - ComforPedic Loft from the Beautyrest Gel Memory Foam | 80 H x 38 W 14 D in Wayfair 35602-04791-WF

Elevate your sleep experience with the ComforPedic Loft from the Beautyrest gel memory foam mattress. This upscale gel memory foam mattress provides three layers of support for a luxuriously comfortable sleeping experience. The gel memory foam mattress... more

Twin XL Waterbed Mattress - Strobel Winners Street Sense 3-in Latex Pillowtop Complete Set 30" Waveless Shallow fill Soft-side | 30 H x 38 W 80 D Wayfair

Strobel’s shallow fill 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 14" Waterbed Mattress - Strobel Winners Street Sense 3-in Latex Pillowtop Top Only Waveless Shallow fill Soft-side | 14 H x 38 W 80 D Wayfair

Strobel’s shallow fill 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 14" Waterbed Mattress - Strobel Winners Street Sense 3-in Latex Pillowtop Top Only Waveless Shallow fill Soft-side | 14 H x 38 W 80 D Wayfair

Strobel’s shallow fill 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 Memory Foam Mattress - Strobel Winners Bold Venture K-Rail 3-in Pillowtop Complete Set 30" Waveless Deep fill Soft-side Waterbed | 30 H x 38 W 80 D Wayfair

Strobel’s super-premium and Strobel think 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... more

Twin XL Memory Foam Mattress - Strobel Winners Citation 3-in Pillowtop Complete Set 30" Waveless Shallow fill Soft-side Waterbed | 30 H x 38 W 80 D Wayfair

Strobel’s shallow fill 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 Firm 12" Gel/Foam Mattress - Blissful Nights Two-Sided Medium & Gel Memory Foam | 80 H x 38 W 12 D in Wayfair 12SWITCH-TL

This 2-in-1 mattress allows you to switch the comfort and feel by simply flipping it. Each sleep surface of the mattress was thoughtfully designed with gel memory foam to dissipate heat and allow air to travel throughout for a comfortable night’s... more

Twin XL Firm 14" Gel/Foam Mattress - Gel Memory Foam & Box Spring ComforPedic Loft from Beautyrest | 80 H x 38 W 14 D in Wayfair 35602-04791-WFS

Elevate your sleep experience with the ComforPedic Loft from the Beautyrest gel memory foam mattress and box spring. This upscale gel memory foam mattress provides three layers of support for a luxuriously comfortable sleeping experience. The gel... more

Twin XL Medium 10" Memory Foam Mattress - Wayfair Sleep™ | 80 H x 38 W 10 D in 9665F6E1691F4394B7D49E7280B19DE2

This memory foam mattress updates your bed with support and a breathable feel all at once. It has a medium-firm feel made up of three layers: a high-density base foam, ventilated pressure relief foam, and a top layer of memory foam infused with green... more

Twin XL 14" Hybrid Mattress - Bear Plush w/ 2 Free Pillows | 80 H x 38 W 14 D in Wayfair BE14P33XL

Phase change material, or PCM as it’s commonly called, uses thermoregulation to absorb your body heat and keep you cool all night long. We paired this with our breathable client fiber so you can sleep comfortably and wake up refreshed. Mattress Size:... more

Twin XL Waterbed Mattress - Strobel Winners Ponder 2.5-in Pillowtop Complete Set 29" Waveless Shallow fill Soft-side | 29 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 Firm 11" Mattress - Brooklyn Bedding Plank 11-Inch Two-Sided | 80 H x 38 W 11 D in Wayfair BBPL1133XL

This dual-sided ultra-firm mattress allows you to choose between the firmest sleep experience available—or a medium-firm sleep experience. The choice is yours with just a flip of your mattress. This sleep surface is inspired by the minimalist approach... more

Twin Medium Firm 12" Foam Mattress - Grandeur Deluxe Xl Size (39"x80"x12") Only Fully Assembled, Good For Your Back, Luxury Height, Long Lasting & 2 Sided By Alwyn Home | 80 H x 39 W 12 D in Wayfair

Who couldn't do with a good night's sleep in their life? The Grandeur Deluxe Orthopedic Double-Sided Medium Firm Twin Extra Long Size Mattress Only by Alwyn Home is smartly engineered to treat you to a comfortable experience when you turn in for the... more

Twin XL 10.5" Hybrid Mattress - Serenia Sleep GOTS Certified Organic Latex & Coil Quilted | 80 H x 38 W 10.5 D in Wayfair SRLTX10ORG-2

Our Serenia Sleep 10.5” Latex/Wool/Coil Hybrid Mattress is a GOTS (Global Organic Textile Standard) Certified Organic mattress-in-a-box. It is designed to deliver an incredibly comfortable GOTS organic-certified mattress at an affordable price. Our... more

Twin XL Medium 11" Hybrid Mattress - Alwyn Home Domenick | 80 H x 39 W 11 D in Wayfair D6CB6D5A56AF48B3BBDE9DF3FA8A21FA

This single-sided, vegan natural, organic mattress is as good as it gets. Greenguard gold-certified, this hybrid vegan mattress is constructed using up to 1, 089 pocketed support coils with side support. The all-natural construction eliminates the need... more

Twin XL 13" Waterbed Mattress - Strobel Winners Gallant Fox 2.5-in Pillowtop Top Only Waveless Deep fill Soft-side Mattress, | 13 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 Firm 12" Gel/Foam Mattress - Gel Memory Foam & Box Spring ComforPedic Loft from Beautyrest | 80 H x 38 W 12 D in Wayfair 35602-04773-WFS

Elevate your sleep experience with the Comforpedic Loft from the Beautyrest gel memory foam mattress set. This upscale gel memory foam mattress provides three layers of support for a luxuriously comfortable sleeping experience. The gel memory foam... more

Twin XL Medium 14" Gel/Foam Mattress - Gel Memory Foam & Box Spring ComforPedic Loft from Beautyrest | 80 H x 38 W 14 D in Wayfair 35602-04785-WFS

Elevate your sleep experience with the ComforPedic loft from this gel memory foam mattress set. This upscale gel memory foam mattress provides three layers of support for a luxuriously comfortable sleeping experience. The gel memory foam mattress has... more

Twin XL Firm 14" Hybrid Mattress - Bear w/ 2 Free Pillows | 80 H x 38 W 14 D in Wayfair BE14LF33XL

Phase change material, or PCM as it’s commonly called, uses thermoregulation to absorb your body heat and keep you cool all night long. We paired this with our breathable Celliant fiber so you can sleep comfortably and wake up refreshed. Mattress Size:... more

Twin XL Firm 11" Mattress - Brooklyn Bedding Plank 11-Inch Two-Sided w/ Cooling Top | 80 H x 38 W 11 D in Wayfair BBPLCT1133XL

This dual-sided ultra-firm mattress allows you to choose between the firmest sleep experience available—or a medium-firm sleep experience. The choice is yours with just a flip of your mattress. This sleep surface is inspired by the minimalist approach... more

Twin XL Waterbed Mattress - Strobel Winners Ponder 2.5-in Pillowtop Complete Set 29" Waveless Shallow fill Soft-side | 29 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 15" Foam Mattress - Nolah Evolution 2.0 Plush Graphite-Infused AirFoamICE | 80 H x 38 W 15 D in Wayfair NOLEV15P33XL

Meet our ultra-high-tech hybrid mattress, rated 2023's best mattress for spinal alignment by Sleep Foundation. The Noah evolution features our patented Dmax tri-zone coils, offering targeted back support and responsive pressure relief. Meanwhile, the... more

Twin XL Firm 13" Mattress - Brooklyn Bedding Plank Luxe Two Sided Firm/Ultra | 80 H x 38 W 13 D in Wayfair BBPLHY33XL

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