Bundle of 4: We now offer 2 leg bundles that measure 2W x 40L and 2 bracelets that measure 2W x 26L + carrying bag, making it a complete set for bite training. They are designed to provide excellent blood flow restriction to the target muscles through the working limb. These blood-restricting bands reduce muscle oxygenation to pre-deplete slow-twitch fibers and reduce their response to training load. Increases Muscle Growth Factors: Studies have shown that exercise can increase muscle protein synthesis, NOS-1 expression, and mTOR signaling, thereby increasing muscle growth. Research has also shown how tourniquets can be used in training to promote muscle growth and increase muscle building potential by reducing myostatin levels. Faster Lean Muscles and Great Tone Without Lifting Heavy Weights: Occlusal training bands cause muscle hypertrophy with minimal impact (usually 10-30% of 1RM). When applied to the working limb and combined with loads of 10-30% of 1RMs (high reps and minimal rest before fatigue begins), results tend to approach those achieved with 80% of 1RMs. In fact, with ease and without the need for high-intensity weightlifting, the Ischemic Band delivers lean muscle and amazing sound. SUPER STRONG AND SUPER COMFORTABLE STRAP: Equipped with a super elastic back strap, the PRO Package sports strap features a quick release buckle and elastic loop to keep slack, easy to fasten, easy to remove after exercising, and very comfortable on the working limb. This order comes with 4 tourniquets for occlusion. It retains its shape and elasticity when you use a bicep band or thigh band. When shopping, please pay attention to the size and dimensions of the product to ensure that it meets your needs. In the title and , we have provided detailed information about the product, including its features and specifications We want you to be completely satisfied with your purchase, so if you have any questions or concerns, please dont hesitate to . We are here to help and will do our best to assist you. Thank you for choosing our product. We hope you enjoy it 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-Minnanxin