Bring Casper comfort to any mattress. Upgrade your dorm mattress, revive your guest bed, transform your sofa couch, or give your hand me down a glow up with a 3" layer of breathable, pressure-relieving foam. Breathe Flex Foam soothes you to sleep with the perfect bit of bounce and keeps air flowing to keep you asleep, while a soft-knit Cozy Cover makes bedtime irresistible from the moment you lie down. Designed for easy setup and even easier sleeping by the experts at Casper.