DURABLE & HIGH ELASTIC - Dual spring design, much more strong, durable and not easy to deform. Surface of spring is smoother and the rust prevention ability is strengthened. Best choice for building up your muscles. UPGRADED FOOT PEDAL DESIGN - Widening and lengthening contoured foot pedals, provide you a comfortable exercise experience. With fixed sturdy foot pedal interior design,Elastic Sit Up Equipment featured with long lasting use. ABDOMEN, ARM & CHEST EXPERCISE: Different using method for different exercise. Ideal for toning & strengthening stomach, waist and legs, arms, hips, thighs and works on the tummy at the same time. LOSE FAT, SHAPE YOUR BODY: This resistance training tool workouts your arms, tummy, shoulders, legs and butt. It is not only way to lose your fat by exercising with our tummy trimmer but also a way to shape your body. LIGHTWEIGHT & PORTABLE: Size of 11.8 inch x 10.2 inch (L x W), Weight: 742g. Portable and light weight, easy to store and can be used anywhere anytime though in office.