About this item 【FREE CROP】 cPRIME Burn sport power bracelets, can be used freely according to the wrist size, suitable for any wrist, male, female, teen, etc. Please note you can measure around your wrist to determine the correct size before purchase. 【HIGH-TECH CHIP】 High-tech multi-function bracelets, inner with technology chips, not only enhance strength and flexibility in exercise, but also help you better grasp the balance. Suitable for running, strength training, yoga, mountain climbing, boxing, etc. 【BORN FOR YOUR NEEDS】 With the latest technology, the cPRIME BURN bracelet sport energy bracelet can extend your deep sleep to a certain extent, especialy for older people. It can be used as a gift to send friends, family, a healthy gift. 【SAFE SILICONE MATERIAL】Food grade silicone, environmentally friendly green, will not cause any injury to the body. Soft and lightweight, the bracelet has elasticity and can be stretched in length for wearability.