MotorHome InnerSpace Travel Comfort 5.5" RV - Mattress-In-A-Box 5.5-Inch High-Density Polyurethane Foam Designed with You in Mind. Lighter Than Traditional Mattresses for Ease of Handling Expands to 90% of Full Size in 30 Minutes and 100% in 48 Hours Reversible with Quilted Top, Bottom, and Sides Motor Vehicle Use Only