Had purchased a replacement futon mattress when a puppy ruined the original.  First replacement mattress I bought cost a little less than this one - but the difference in quality is night and day. The first futon replacement mattress was thin and just cloth with loose stuffing inside.  This mattress that I just bought from Wayfair (Serta Redbud 9" Coil Full Size Futon Mattress) is awesome!  Comfy to sit on and thankfully the puppy is now old enough to know what to chew and what not to chew.