Zen Comfort - Memory Foam Seat Cushion - Wheelchair, Car, Truck, Office Chair, Meditation & Yoga, STORAGE BONUS BAG INCLUDED! Velour with Non-Slip Bottom Non-slip bottom cover ensures pillow stability on chair, Designed to cradle hips & improves posture Bowling pin-shaped center prevents over-heating & provides optimal comfort by increasing ventilation Perfect relief for Prostate, Hemorrhoid, Sciatica, Hip, Lower & Upper Back, Tailbone, Pregnancy Pain Great posterior comfort aid for Wheel Chairs, Meditation, Yoga, Office, Auto, Truck & Air Travel Features carry handle & 360 degree zippered, Cover-machine washable. BONUS BAG INCLUDED!