The SPRI(R) Resistance Band Kit is outfitted with an Interchangeable Tubing System that allows for the same exercises you would normally do with pulley-type machines. The easy open-close metal clip easily attaches onto the tubing to other interchangeable accessories, such as the ankle strap and easy grip foam handle for a multitude of resistance training exercises. Product Features: Includes Interchangeable Tubing System with 5 resistance bands in varying resistance levels Allows for the same exercises you would normally Do with pulley-type exercise machines Secure Clip open-close metal clips for easy on-off to change off tubing and accessories Kit includes: 5 resistance bands, door anchor, foam handles, ankle strap, exercise chart and carrying bag Manufacturer's Warranty: 30 days