Superior 2" Ventilated Memory Foam Mattress Topper, High Density Premium Visco Elastic Memory Foam for Neck & Back Support - Twin XL Bed RESTFUL SUPPORT. This Twin XL Mattress Topper measures 38" x 80" and is 2 inches thick for luxurious comfort. Our high density visco-elastic memory foam provides all around pressure relief for a better night's sleep and a more comfortable morning. Superior's premium quality memory foam topper is an easy way to refresh an old mattress, make a thin mattress feel more luxurious, or add comfortable even support to a sagging mattress TEMPERATURE REGULATING. This memory foam topper is ventilated to maintain comfortable sleep temperature by increasing air flow. This mattress topper is more breathable than solid memory foam toppers, and helps keep you cooler throughout the night ALLERGY FRIENDLY. Memory foam bedding is hypoallergenic and can provide relief to those allergic to pure down bedding. Our memory foam formula naturally repels dust mites and resists microbes, making it perfect for allergy and asthma sufferers. An ideal choice for a children's bedroom or a guest room! LASTING QUALITY. With a density of 4 lbs, Superior's Ventilated Memory Foam Mattress Topper offers more support, and lasts longer than toppers with lower density. If you like the feel of a Tempur-Pedic Mattress, you will love the Superior High Density Memory Foam Topper. It adapts to your shape, providing full body support for all sleeping positions: back sleepers, side sleepers, and stomach sleepers alike will wake up feeling more well rested than ever GUARANTEE: PLEASE CHECK "SOLD BY" SELLER NAME. Superior and Grand Down productsare not distributed internationally so please only purchase from a retailer that is based in the US. If your order arrives from an overseas shipper please know you did NOT purchase a Superior or Grand Down product. If your order arrives from a domestic location please confirm that it says Superior or Grand Down on the care label as well as HOME CITY INC as the manufacturer. If it does not, please contact Amazon and us immediately