Sit Up Equipment Bar, Portable Sit-ups Assistant Device with 12.5cm Suction Cups and 4 Positions for Home Work or Travel (Gray Pink+Tension Band)

Sit-up aids can increase heel strength. Stable and safe Suction cup: 12.5cm enlarged suction cup, 3cm thick rubber, strong suction, non-slip, firm and safe Soft and comfortable: thick foam, soft and comfortable, cushioning protection, safe material, no pain in the back of the foot Multiple functions: help you roll abdominal exercises, push-ups, side kicks, sit-ups, stretch backwards, elbows, push-ups, small amounts of training and other sports. Easy installation: press the spring inward to adjust the height of the crossbar, press the black button up or down to release / fix the suction cup