Fits wrist length 4.33\"-8.66\" (110mm-220mm) and 0.83\" (21mm) in width. you can adjust according to the circumstance of individual wrist. Easy and direct installation and one button removal. Made by top quality silicone material, safe and soft, Breathable design for sport, Avoid sweating. Multiple Choice: There are different popular colors available, such as Barbie powder, white, mint green, red, retro rose, orange, black, walnut, gray, blue, green, midnight blue and purple. Applicable to the pursuit of quality of life.