Making sure your ring fits is a crucial part of the ring shopping process. All Patrick Adair Designs Rings are sized in US sizes. If you are unsure of your ring size please order our Free Ring Sizer first. The Spirograph Damascus Steel Ring is eligible for a free size exchange per ring. If you're ring isn't a perfect fit, contact us at firstname.lastname@example.org, and we will be more than happy to find a solution for you.