You don’t want your topper to be too long or wide and run the risk of gliding along the mattress. Most Twin XL mattress toppers should be around 80 inches long and 38 inches wide to fit the bed ...

Plus, the best twin and twin XL mattress sales happening ... The Cocoon Chill is a medium-firm memory foam mattress with a cooling cover layer. Its perfect fit memory foam adapts to your body ...