Portable:The portable pedal exerciser is a lightweight and small size chest expander. Easy to transport and store. You can use the weight stretcher at home, office, hotel, gym or anywhere you need it during travel. High quality material:The material of the weight stretcher is carbon steel, which has excellent elasticity, is sturdy and durable, and is not easy to deform. It has a long lifespan. It has steel pull rods and anti-tip PU handles. The handle and pedals of this chest expander are made of engineering plastic, which is strong and wear-resistant, suitable for any level of strength training. Multi-functional bodybuilding exercise:It is a professional fat burning and muscle building tool. This chest expander is great for strength training, muscle stretching exercises like chest expanders, arm stretches, glute workouts, abs trainer, foot trainer, back trainer and other upper body workout equipment. Ergonomic:The handle and buckle of the chest expander are ergonomically designed, providing a comfortable grip and effectively preventing hands and feet from slipping. You won't feel uncomfortable when using it for a long time. Improves muscle coordination, endurance, flexibility. Adjustable resistance: The fitness expander has five springs, the number of springs can be increased or decreased depending on the strength required by the body. individual to increase or decrease the strength of the force.