Frame Assisted, Roll Motion Sit up Trainer. Foam Padded Handle Grips and Cushioned Head Rest. Lightweight, Portable and Simple Installation. Isolates Core and Abdominal Muscles. Maximum user weight 100kg.  The ab cruncher, also known as the sit up cruncher is designed to isolate, strengthen and tone the abdomen, helping to strip away belly fat for a tighter stomach. To assist effective technique while building core and lower back strength to progress towards unaided, perfect crunch form.Designed to reduce strain on the neck by keeping the neck supported upright and aligned naturally, the ab cruncher helps to maintain grip during intense workout sessions with multiple grip options for different exercises.The sit up cruncher is extremely simple to install, providing the opportunity to exercise anywhere and everywhere.Stomach muscle training equipment for commercial gyms, use in a home gym set up, yoga and pilates studios, physios and recovery or any flat floor. Ideal for weight loss, bui