Strengthen and exercise your body muscles using these convenient pieces of equipment. This Atleticore Resistance Bands make it easy to do strength exercises in a variety of locations due to its lightweight and portable design. These bands are made from natural latex that provides the bands ultimate elasticity. Do physical therapy strengthening exercises for shoulders, knees, arms, legs, and ankles. Atleticore Resistance Bands are a great tool to use for either yoga or pilates to help increase flexibility.