• Anunnaki Portable Wrist Fitness Sports Exerciser Muscle Enhancer Wrist And Forearm Strengthening Color: black Size: 27* 14cm Warning:1. Check that the fittings of the wrist force device are intact and that there is no looseness before use2. Do not push hard when you are not strong enough to prevent muscle tension3. Each exercise period should not be too long so that it does not cause muscle fatigue and does not affect training4. Children under 10 years of age are not recommended to use wrist brackets