Custom made to fit. I will contact you after you purchase with instructions to get accurate sizing. These sterling silver bangles are super lightweight as well as super sturdy. The sterling is 16 gauge. They are made to be able to stay on 24/7. I made mine (pictiured above) and have worn them non-stop for 1.5 years without any tarnishing or signs of wear. This includes showers, farm chores, swimming, working out, etc. Wear one or wear 30! They pair perfect for for a minimalist look, as well as stacked for a more bohemian feel.