Product is designed to be equally usable and give maximum comfort in the home, office, on the road or any extended sitting situation. Use as a gel car seat cushion, gel truck seat cushion, gel mobility seat cushion, gel wheelchair cushion, gel stadium cushion or gel office chair cushion. Say goodbye forever to numb-butt, fidgeting, squirming and experience welcome relief from sciatica, low-back pain, poor circulation cutoff, or sensitive vascular issues like varicose veins and hemorrhoids. Two cover options: 1. Airmax removable cover is breathable mesh, two-way stretch fabric for cool all day driving comfort. 2. Standard lycra/neoprene, which is a stretchable, body-conforming fabric. Grippy bottom prevents sliding on the seat. Cover is safe for hand washing and air drying.