Product parameters: Material: manganese steel / foam / silicone Size: 27 * 12 * 13cm Color ： black Weight: approx. 620g Scope of delivery: Portable sit-up bar * 1 Product : 1. SELF-SUCTION STYLE - Portable self-suction sit-up bar with thickened silicone sucker sucker diameter 12cm strong suction that holds the floor firmly in place suitable for smooth surfaces such as tile concrete-hardened marble floor. 2. FLEXIBLE AND ADJUSTABLE - Sit up bar ugnapf with spring buckle the height of the seat machine is adjustable in 3 gears more flexible and meets your different needs. 3. MULTIPLE FUNCTIONS - A variety of fitness methods sit-ups flat supports push-ups roll-ups push-ups back-ups leg-ups side-ups hip bridge movement leg extension ... 4. SAFE - Foam protective handle sit-up aids wear-resistant environmentally friendly do not hurt the foot grip comfort increase friction convenient and safe.