about this article1. ERGONOMIC DESIGN -- 4-Tube elastic sit up pull rope, with thick rubber four-tube design, foam grips and non-slip nbr pedals that protect hands from injury and the risk of slipping during exercise. 2. LOSE FAT & FA? TONE YOUR BODY -- Multi-functional tension rope, easy for you to build different parts, easily and safely tone and tighten your waist, leg and arm, relax your shoulder, comprehensive fat burning cardio.3. APPLICABLE SPORTS -- Pedal resistance band suits for fitness equipment, health massage, fitness body, sports trends, dance sports, yoga, stretching...4. APPLICABLE PLACES -- Sit-up bodybuilding expander suits for any place, such as homes, bedrooms, offices, gyms, schools, h? such, etc.5. BREATHABLE & SWEAT-ABSORPTION -- The handle is made of soft foam that has excellent sweat-absorbing performance to provide a non-slip feel and breathable grip.Note: data is manual measurements, please allow 1-58cm error, due to differences between light and screen, there will be a certain color difference, the specific received in kind prevail.