Made of the highest quality natural latex, which is extremely durable, our bands will maintain their resistance for a long time. Each tube band is double layered and carefully constructed to provide maximum resistance. Resistance bands set are perfect tool to perform a wide variety of exercises to strengthen upper body and lower body muscles. This makes them ideal for any type of strength training routines. With the ability to combine any of the five bands together to achieve multiple levels of resistance, you will be able to enhance the effectiveness of each workout with ease.