After using them for 2 years, the velcro degraded, so I've added to the velcro part with zip ties as shown in the photo, making them usable for now before listing them. The size can be used by women around 22cm up to men of 29cm, but they won't tighten securely for those 25cm and below. Recommended for beginners or for family use, but they no longer have the hold necessary for big jumps or intense tricks. They were used in saltwater, so they look rough due to corrosion and wear, but the main body is thick and sturdy, so I believe they can be used for several more years if the velcro is replaced.