We've transformed the traditional free-weight plate into a heavy duty rubber, variable resistance ring, better know as the Soloflex Weight Strap. Easy to load, easy to store and they won't hurt you if you drop them. The Soloflex weight strap set includes: 1 pair each of 2.5 lb, 5 lb, 10 lb, 25 lb, 50 lb straps, and 1 pair of retainer clips. Weight straps use the stored energy in the rubber to equal the resistance you'd get with free weights. Rubber protects your ligaments by dampening shock.