By providing an accurate WRIST size (NOT bracelet size) and by not guessing. Be sure to use the instructions here. If you follow the instructions and provide the correct info, I'll ensure your item fits you comfortably based on the details you provide. This goes for dog collars, too -- we need NECK size -- not collar size. IMPORTANT: Do not guess; do not surmise. Use these instructions, and your bracelet or dog collar will fit properly. Size Matters! Standard bracelets can be up to 9 inches in length. X-Large bracelets up to 12".