Material: Each band is soft and made from polyester so they're a breathable fabric material, they also have an elastic lining for grip to ensure the bands don't move during your work out. Included: 3 x resistance bands. Work Out Tools: Get a pack of three fabric resistance bands. Sizes These bands come in three sizes; S: 8x33.5cm; M: 8X39cm; L: 8x44cm. Features: These resistance bands are perfect for your glutes, thighs, and hip muscles. And they increase the difficulty of exercises such as hip thrusts, squats, lunges, and more. Resistance Bands | Living Social