Sit Up Aid Trainer Self-suction Adjustable Multifunctional Sit Ups Assistant Bar Abdominal Muscle Core Household Fitness Equipment Trainerfeature:1. Comfortable Expanded Foam Handle, Integrated Steel Pipe And Covered With Water-absorbing Foam, Feel Comfortable, Sweat-absorbing And Anti-skid.2. A Simple Locking Operation. Gently Press The Padlock To Secure It. It Is More Convenient To Use.3. Thick Foam Packaging. Effective Buffering Reduces Sports Injuries And Safer Sports.4. The Third Gear Can Be Adjusted According To Different Needs, And The High And Low Gear Can Be Switched Freely.5. Multifunctional, A Combination Of Sitting Posture Assistance And Strength Training.specification:materials: Steel And Foamsize: About 50x26x15cmcolor: Blackweight: 1000gnote:1. Due To The Different Monitor And Light Effect, The Actual Color Of The Item Might Be Slightly Different From The Color Showed On The Pictures. Thank You 2. Please Allow Slightly Measuring Deviation Due To Manual Measurement.