Choose from available size optionsHigh-density polyurethane foam mattress5.5-in. thicknessPerfect for RV bedsReversible and quilted on both sides15-year manufacturer warranty. Make your RV as comfortable as your home with the MotorHome InnerSpace Travel Comfort 5.5 in. RV - Mattress-In-A-Box. This polyurethane foam mattress is quilted on both sides for superior comfort. It has a stain-resistant polyester cover making it perfect for life on the road. Choose from available size options. Additional Specifications CertiPUR-US foam made without formaldehyde heavy metals or phthalates Compressed into box for easy shipping Expands to 90% full size in 30 min. and 100% in 48 hours Reduces motion transfer between partners for more restful sleep For use in a motor vehicle only Made in the USA Size: Twin.