The Convolution Pillow offers customizable support for any sleep style. It features a removable memory foam core that can be convoluted on one side for back sleepers, flat on the other for side sleepers, or removed altogether for stomach sleepers. With a luxurious down-like feel from its gel-coated microfibers and a breathable cotton cover, you can sleep comfortably and soundly. Enjoy three levels of comfort in one pillow for proper head and neck support.