FIRM Pregnancy Pillow U Shaped Full Body Support Pillow Sleep in Comfort w/Cover. For comfort sleep to perfectly suit the body line while sleeping. It provides support to reduce stress from the belly, neck, back, and hips while sleeping in different positions. if you like to sleep on your sides this pillow gives the best comfort to sleep in such position. When you want to sleep on your back, you can roll this pillow to your back for added support. 50/50 Poly/cotton combination.