Vinyl TUSH CUSH Large Home Office Orthopedic Large Computer Ergonomic Seat Cushion Full Size (14 X 18") - The Original High Quality Tush Cush is designed to relieve and prevent back pain, numb buttocks and other discomforts associated with sitting. Cutout section suspends your tailbone (coccyx) reducing pressure on your lower lumbar discs. Wedge shape (slant from the back 3" down to 1/2" in the front) tilts your pelvis forward to restore your spine's natural lumbar lordotic curve. Options: Velour Fabric, Faux Leather Vinyl and Extra Firm Density Made in the USA by craftsmen since 1987. The Tush-Cush has original polyurethane foam that is a great fit for those who weigh under 200 lbs.