Premium Material & Solid StructureThis AB cruncher is constructed with high quality steel frame, which features great sturdiness and excellent lifespan. With triangular structure, the sit up assistant holds up to 220lbs. Moreover, the firm connections between each part ensure overall stability safety. Comfortable Exercising Padded headrest with premium pearl sponge ensures reliability. Foamed grip prevents your hands from scratches and help to focus on exercise.