Bestier 3 Inch Gel Memory Foam Mattress Topper Twin XL Size (38 x 80 Inch), Cooling Bed Topper & Soft Mattress Pad, High Density Foam with Tencel Cover for Back Pain, RV, Dorm

SUPERIOR COOLING WITH TENCEL Unlike cheap rayon or polyester covers that trap heat, our gel-infused memory foam is paired with a premium Tencel cover and 3D mesh sides. This "Quad-Cooling System" is 50% more breathable, actively wicking moisture to keep hot sleepers cool and dry all night. | INSTANT COMFORT & BACK PAIN RELIEF Revive your old, hard mattress instantly. Our 3-inch high-density foam conforms to your body, relieving pressure points on shoulders and hips. It serves as an ideal bed topper for alleviating back pain and improving sleep quality on master beds, sofa beds, or campers. | STAYS PUT: DUAL-LOCK STABILITY Stop readjusting your topper every morning. We upgraded the standard design with a non-slip mesh bottom PLUS 4 adjustable elastic straps. This ensures the mattress pad grips securely to your mattress, preventing sliding even if you toss and turn. | CERTIFIED SAFETY & DURABILITY Sleep soundly knowing your family is safe. The foam is CertiPUR-US certified for durability and content, and the cover is OEKO-TEX Standard 100 certified. It is completely free from fiberglass and harmful heavy metals, making it a safe choice for sensitive skin. | WASHABLE COVER & EASY SETUP The soft Tencel cover is fully removable and machine washable for easy care. Setup Tip: Please unroll the mattress topper in a ventilated area and leave it flat for 48-72 hours until fully expanded. This allows the compressed foam to regain its original plush shape and dissipates any new foam scent.