TheraBand™ Band Loops for the first time provide continuous loop elastic bands in the same colors and resistances as authentic TheraBand™ System of Progressive Resistance. They feature 4 resistance levels, including Yellow, Red, Green, and Blue supplied in 3 lay flat lengths of 8″, 12″ and 18″. The 3″ wide loops can be used for a variety of applications, particularly lower body exercises to increase strength and balance.