INSMART Booster Seat Cushion,Pressure Relief Seat Cushion for Long Sitting Hours on Office Home Chair, Car, Wheelchair,for Tailbone & Back Pain Relief,Black Gray hot 7in(22-40cm) Double users mode &

7in(22-40cm) Double users mode & 240 sets memory function Dual power supply-4 AA batteries or USB charging

perfect for dry seasons or screen-time eye relief

low noise and energy saving

Bluetooth music

INSMART Booster Seat Cushion,Pressure Relief Seat Cushion for Long Sitting Hours on Office Home Chair, Car, Wheelchair,for Tailbone & Back Pain Relief,Black Gray hot 7in(22-40cm) Double users mode &INSMART ergonomic seat cushions are scientifically designed for people who sit for long periods of time. With its unique 5 zone support and hollow ventilation system, it not only relieves pressure on the coccyx, hips, and back, but also keeps you comfortable and cool. Made of high quality slow rebound memory foam, it can provide lasting support whether you work in the office, drive or relax at home. Five Zone Pressure Distribution,No Fatigue After