This outer shell is 10” tall to allow for the 4” of comfort foam that Sleep Number puts into the 360 P5 Smart Bed model. If you decide to add an inch of foam to your C4 model, this cover is a great way to upgrade your C4 into the thickness of a P5! These covers are guaranteed to fit perfectly. We use heavy weight fabrics, Kevlar thread.
Note: Cozy and Custom makes after market covers for Sleep Number brand beds and we are not affiliated with Select Comfort or Sleep Number in any way.