How long would it take for a cotton batting futon to compost?

It would depend on the compost method. [1] It could breakdown in a matter of days in a commercial or municipal composter. [2] It could breakdown faster, in non-commercial and non-municipal composting methods, if cut into smaller pieces. But, no matter what, it would need the careful attention to moisture and heat levels. And it would need more frequent turning. If proper composting procedure is followed, then it's supposed to take no more than a year for compostable materials to break down into compost. [3] Breakdown would be slowed if the cotton batting wasn't 100% organic.