ADJUSTABLE RESISTANCE: Adjust the tensile strength to your needs; gradually increase the resistance to build strength! COMFORTABLE GRIP: Made with ergonomic, non-slip handles for a safe and secure grip. VERSATILE: The double-grip allows for use in multiple strengthening exercises, which will help increase strength and mobility. DURABLE MATERIALS: Using a sturdy steel frame and coil, our Grip Trainer will last a very long time.