Ultra comfort Posture Support Cushion cradles center of your back to provide even support to your left and right sides. Micro beads positioned in the center (on each side) provide firm support for the lower back area. Base of cushion positions your lower back so it provides support to your pelvic area. Great when sitting for long periods of time. Use while working at your desk, watching TV, in the kitchen, car, anywhere! Loops on side allow you to tie cushion around seat. Outer cover made of 100 percent polyester. Spot clean, air dry.