SLEEP COMFORTABLY: Get your coziest sleep atop this twin size 6 inch mattress covered with a soft knitted fabric top and filled with premium foam over an innerspring core ideal for all body types and sleep styles. SAFE SLEEP ENVIRONMENT: High quality foam is CertiPUR-US Certified for content so you can buy with confidence knowing your indoor air quality will not be compromised. Our mattress is manufactured for safe sleep, durability, and performance. HIGHLY VERSATILE: Compatible with standard box springe beds, platform beds, trundle beds, daybeds, and is ideal for bunk beds or RV beds