Comfortable Car Seat Cushion : This adult booster seat for car. Breathable fabric, polymer memory foam and non-slip silicone gel of this car seat cushion with the right thickness help you reduce pressure on the tailbone. The car seat cushion adopts mesh material, comfortable and breathable, make you more comfortable when driving. EXTRA HEIGHT : This adult car booster seat can help you increase about 10cm maximum while driving, and it can better help you expand your vision, see road conditions more easily and avoid accidents. So this driver's seat cushion will make a big difference and make trips much better for more comfort. It is a simple yet effective way to improve comfort, reduce fatigue and relieve back pain. ANTI-SLIP DESIGN The silicone gel of this car booster seat for adults adopts non-slip design to effectively fix the car seat cushion and will not slip when you get in and out of the car. Wide Application This portable memory foam car seat cushion is very easy to install and