We developed this product to make ab work more comfortable. Crunch movement for strengthening all the abdominal muscles (high-low-oblique). Grip: Foam arm for good traction against the floor. Compact design: Hinged arms to store under a bed. User comfort: Ergonomic headrest and mat for more comfort. General information:Size H12.5, W40, D71cm. Weight 4.46kg. Manufacturer’s 1 year guarantee. EAN: 3608419437232.