Not for the fainthearted, this heavyweight skull bangle is handcrafted in solid sterling silver and weighs over 40 grams. While weighty, it is still a comfortable and satisfying piece to wear and an epic statement piece. The round bangle wire is 4mm thick. The opening for the bangle is about 3.8cm (an inch and a half) wide. The sizing measurements are for the entire inside circumference of the bangle, including the opening gap. Size pictured is a size medium. In general, the size of your wrist is the same size you want the bangle to be. The best way to measure is to wrap a fabric tape measure around your wrist. Handmade to order. Please allow up to 6 weeks for production.