Recently purchased the Saatva mattress. I very much like Saatva's Pillow-top which is sewn into the mattress, in a classic Euro-style and is one of Saatva’s trademark signs, something they are very proud of. It is composed of an insert, that is about an inch in thickness and has a weight of 1.5 pounds. In addition to this, it has a fairly decent ILD of nearly 34-35. This insert works to combat random noise generation of nthe coils and cushions the more rigid tips of the springs. The cover thopugh is only 40% cotton, not completely organic?