CVG's Bostrom Seating truck mattresses feature industry leading Serta technology. Each mattress comes in various sizes to accommodate the common mattress sizes used in Class 8 trucks with sleeper cabs. The 7-series mattress features a top layer of Serta's Cool Action gel memory foam that provides all the benefits of memory foam technology and helps regulate body temperature. The mattress comes about 7" thick and provides premium level comfort for truck drivers. The 4-series mattress features a top layer of advanced memory foam to ensure improved comfort by relieving pressure points. This mattress comes 4" thick.