Physiclo Pro Resistance Women's Compression Capri Training Pants with Built-in Resistance Band Technology BODY: 88% polyester, 12% spandex. RESISTANCE MESH: 64% nylon, 36% spandex Imported Physiclo is the worlds first compression capris with built-in resistance to boost fitness results Challenge your leg muscles with extra resistance and make your workouts more efficient Built-in resistance bands generate up to 10 lb. of force to improve power, endurance and agility Extremely versatile training tool that can be worn to enhance any workout or fitness routine Physiclo resistance gear doesnt put stress on your joints, unlike weighted vests or ankle weights