Fitness Gym Equipment Training BFR Occlusion Bands Bodybuilding Weightlifting Arm Leg Muscle Growth Blood Flow Restriction Bands 1.We can custom logo BUNDLE PACK OF 4: Our new PRO BFR Bands now come in a BUNDLE with 2 LEG bands that measure 2"W x 4"L and 2 ARM bands that measure 2"W x 24"L. They are designed to offer superb restriction of blood flow through the working limb to the targeted muscles. INCREASED FACTORS FOR MUSCLE GROWTH: Studies show BFR training can increase muscle protein synthesis, NOS-1 expression and mTOR signaling, resulting in increased muscle growth. The studies also show the use of BFR tourniquets in training can boost muscle growth and enhance potential for muscle gain by reducing Myostatin concentrations. QUICKER LEAN MUSCLES AND SUPERB TONE WITHOUT LIFTING HEAVY WEIGHTS: The Occlusion Training Bands induce hypertrophy at very low loads (usually 1-3% of a 1RM). When applied to working limbs and paired with loads of 1-3% of a 1RM (lots of reps and very low rest until fatigue sets in), the results achieved are typically similar to those achieved with 8% 1RMs. Indeed, the Ischemic bands give lean muscles and amazing tone quickly and without heavy weight lifting.