Black Mountain Products single resistance bands are made out of the highest quality rubber to ensure maximum life and are 99 percent latex free! These bands are ideal for physical therapy, exercise, weight loss, Pilates, muscle toning, muscle strengthening, stretching, rehabilitation, and general health and fitness. B.M.P. resistance bands are great for home use, gym use, offices, and are ideal for travel. B.M.P. single resistance bands are a great alternative to conventional weights and exercise equipment. All Black Mountain Products Resistance bands come with a manufactures warranty.