1. ERGONOMICS DESIGN: Longterm driving is prone to back or leg pain. Our car seat cushion's unique ergonomics and orthopedic design help relieve sciatica, pelvis, cheekbones or tailbone pain when driving; effectively reduce leg pain, fatigue and numbness, making your driving more comfortable. 2. BETTER DRIVING VISIBILITY: The car seat cushion for the driver's seat is about 3 inches thick, which helps drivers whose seats cannot be placed in the ideal position have better visibility and more when driving. 3. WIDE APPLICATION: Our car seat cushions can be easily applied to other chairs due to the easy installation process. You can use it in your truck, office chair, wheelchairs, airplanes, and more! 4. EASY TO REMOVE WASH: The wedge car seat cushion is designed with a removable zipper cover, so you can very easily take it off for cleaning. The durable fabric can be hand washed or machine washed and it can be reused. It does not fade easily and it still gives you the support when you wash it many times.