Description : PROVIDES SUPPORT : This comfortable , arch design naturally curves to the back , allowing effective while protecting your lower tailbone , providing stability , and constant tension . PREMIUM WORKOUT EQUIPMENT : Great for those with lower back pain problems who to continue strengthening their abdominal muscles . The Abdominal Mat will not hurt your lower back making this your most effective . HIGH QUALITY MATERIAL : The ab exercise mat made of PVC , EPE , compact , comfortable and durable term service . Foldable design , store , can easily anywhere . WIDE APPLICATION : This sit training abdominal , back , oblique muscle groups during crunches , leg lifts & amp ; sit ups and provides stability & amp ; constant tension PROVIDES OF MOTION : perfect amount of firm while providing a challenge to your core muscles . Specification : Material : PVC , EPE Size : 360x300x90mm / 14 . 17x11 . 81x3 . 54inch Package Includes : 1 Piece Foldable Abdominal Mat Note : 1 . Please allow slightly error due to manual measurement . 2 . Due to between different monitors , the picture may not reflect the actual the item . 3 shopping !