Support your body's efficient, optimal position during exercise with OPTP's PRO-ROLLER Arch. On a foam roller, a mat, or even a Pilates Reformer/Cadillac, the PRO-ROLLER Arch offers unlimited uses. Use the versatile PRO-ROLLER Arch to improve posture on a foam roller, to enhance Pilates routines, to increase the instability of a foam roller, as a positioning tool, as a block, as a cushion, and so much more. When placed across the top of a PRO-ROLLER (or any 6" diameter foam roller), the Arch hel