High Quality Materials: The anklet are made of strong elastic string,suit for most people and comfortable to wear. Helping to enhance metabolism. Safe and healthy for long-term wearing. Anti-Swelling Obsidian Anklet: Helps you to get rid of ankle swelling and improve a person's overall health. Releases magnetic waves that relax your muscles and regulates your sleep patterns. Hematites Healing Power: Bringing cooling energy to the body (Feng Shui) and anxiety relief; balancing;helps to keep the mind focused. closely related to the root chakra. Adjustable Obsidian Anklets: Obsidian bracelets are made of 100% durable and highly elastic eco-friendly cord and are suitable for wrist or ankle sizes from 7 inches to 9 "so there is no need to worry about cord breakage or elastic hair scratching. Best Gift: A perfect gift for boyfriend, brother, classmates, best friends, loved ones or a special treat for yourself. And all occasions: Graduation gifts, Anniversary, Birthday, Christmas, Thanksgiving Day, Valentine's Day.