The Posture Perfect is by far our most popular choice for an innerspring futon. Quite thick, extremely supportive and quite comfortable to boot! This futon mattress is an excellent compromise between quality and affordability. At 10” thick (this may vary slightly), it simulates a conventional bed mattress while retaining enough flexibility for use on any bi-fold frame. The durable innerspring core sits between two ½” layers of Fibre-Foam (a bonded cotton and polyester compressed pad) all surrounded by 3” of polypad (processed foam) and an additional ½” of cotton for a heavier, cushier feel than the thinner Preferred Coil style. The resilience and support offered ensures that this futon mattress will keep you sleeping or relaxing comfortably no matter how you use it for many years to come.