"Add an extra layer of comfort to your bed with the Lavio 4 inch memory foam mattress topper, designed to fit a double mattress. Built with a dual-layer construction, it combines 2 inch cooling gel memory foam with 2 inch bamboo charcoal memory foam to help regulate temperature while delivering balanced support and pressure relief. For a secure fit night after night, the non-slip base is paired with adjustable elastic corner straps to keep the topper in place. A breathable knitted fabric cover completes the design; it’s removable and machine washable, making everyday care and hygiene simple. Supplied vacuum packed for transport, allow 48-72 hours for the topper to fully expand and return to its original shape. Key features Designed for a double mattress 4 inch extra thick mattress topper Dual-layer design: 2 inch cooling gel memory foam and 2 inch bamboo charcoal memory foam Helps regulate temperature for more comfortable sleep Pressure relief support for hips, shoulders and back Non-slip base with adjustable elastic corner straps Breathable knitted fabric cover Removable, machine washable cover with zip fastening Vacuum packed; allow 48-72 hours for full expansion Dimensions 190cm x 135cm x 10cm (L x W x H) Please note: Colours shown are as accurate as possible, though may vary slightly depending on your screen settings."