Professional Back Pain Relief Gel Back and Lumbar Cushion - Perfect for Long Way Drivers(black) 100% SGEL comfort: SGEL of medical grade provides superior comfort by eliminate pressure points dynamically and absorbing shock force and vibration while bearing the body weight. 100% Stability: Balance Gel design for excellent stability ; Environmental friendly: no leaking, non-toxic, non-silicone nor polyurethane. 100% Ergonomic Design: Extra thin and low profile maintains ergonomic seat design Cool in the summer, warm in the winter! Air channels design and genuine air mesh covers; enhance air circulation and breathable air mesh covers. Easy-on, easy-off: Fits to your easily by patented Magic Tape