Features 1、BODY BUILDING: Temporarily restricts blood to the muscles, accumulating lactic acid and HGH (Human Growth Hormone) to aid in development and glucose muscle growth. 2、COMFORTABLE AND HIGH ELASTICITY: The elastic band is extra thick with high resistance and will not lose its elasticity over time, which can help you achieve optimal blood flowing during training. 3、EASY TO CARRY WORKOUT BAND: The portable hip resistance band is easy to use and carry anywhere, home, gym, outdoors or traveling. 4、SUITABLE FOR MULTIPLE EXERCISES: The fabric resistance bands won't slide or roll up during your workout, perfect for sports and fitness, great for assisting with pilates, barre, squats, equipment training and beach body workouts. 5、EFFICIENT AND RELIABLE: Helping to accelerate your fitness goals, you will be able to improve your strength quickly and tune up your body faster. Material: polyester fiber Function: it can temporarily restrict blood into muscles, accumulate lactic acid and HGH (human growth hormone) to help women s leg/hand development and glucose muscle growth Design:high flexibility, adjustable size Package List 2 x Blood Restriction Bands