Our 2 inch wide bands for glutes and arms are designed for superb restriction of blood flow through the working limb to the targeted muscles during workouts. Each set contains two 2"W x 40"L occlusion training straps.QUICKER LEAN MUSCLES WITHOUT HEAVY WEIGHT LIFTING Our patented blood flow restriction training bands for arms and legs induce hypertrophy at very low loads. When performed correctly, results are typically similar to those achieved with 80 1RMs.INCREASED FACTORS FOR MUSCLE GROWTH Studies show that practical blood flow restriction training increases muscle protein synthesis, NOS 1 expression and mTOR signaling.THICK and STRONG Designed to be even tougher than you, these occlusion workout bands are furnished with extra thick and strong elastic straps, which hold their shape and elasticity. Our durable workout straps won't slip while you sweat it out.ULTRA COMFORTABLE Don't get pinched by low quality leg and bicep bands The BFR occlusion training bands have pro quality cam buckles. Exceptionally comfortable, easy to strap up and release in between sets exercises. Don't settle for anything less."