The seat cushion on your KD Lightweight Wheelchair is one of the most comfortable on the market. It has been designed specifically to enhance operator comfort and to reduce back fatigue and stress. But as durable as it is, it will eventually need to be replaced and when it does make sure you choose the authentic KD Healthcare Smart Chair replacement seat cushion. The KD Smart Chair cushion provides just enough give to cradle you gently but is also firm enough to help you maintain proper posture and help prevent the kind of sagging in the saddle that can leave you with an aching back at the end of the day. This authentic KD replacement cushion installs in seconds and will restore your chair to its proper level of comfort and performance.