Sacro-Ease Wedge Seat Support Cushion The McCarty s Ergo Wedge is a new product designed to give superior back support Made with poly foam and comfort foam the Ergo Wedge helps bring your hips and knees to a neutral position reducing the impact to the spinal discs There is a removable insert in the tailbone area should you need it The fabric is removable and washable Complete with internal comfort memory foam this support will provide maximum comfort while supporting your spine The Ergo Wedge can give an old seat new life by adding a supportive ergonomic wedge to realign your body Those who need extra support every day at work such as taxi drivers bus drivers pilots and truck drivers have used Ergo Wedge products for years