This is a lovely piece, it has all the benefits of having an edgy o-ring and spikes, while appearing quite delicate with the thin polyurethane strips and criss-cross pattern. It attaches in the back with easy to use clasps, they can attach multiple ways to tighten the choker or loosen it and it would fit the average person’s neck (including mine which is quite large). That being said I would advise you to measure your neck’s circumference just to be sure. The largest length spans approximately 14 inches (or 35cm) and the tightest closure leaves you with approximately 12 ¾ inches (or 32.4cm). Just a great piece to have!