Power Resistance Bands use high strength and rapid rebound to intensify your workouts. Nzg uses an exclusive manufacturing method to provide 100% latex-free natural rubber bands derived from tree sap. The tensile resistance is broken down into seven color-coded levels varying in weight and width. Get a versatile workout range with this easy-to-use fitness accessory that targets your back, arms, glutes and legs. A compact and portable design ideal for tossing in your gym bag or as part of your home-gym setup! Available to order individually or in pairs.