Our 2-inch wide bands for glutes & 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 & mTOR signaling.THICK & 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 & release in between sets/exercises. Don't settle for anhing less.<br> Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-YJL official store