This leather chest harness has raised metal studs on the leather straps that are showing at the front but no decoration on those at the back. The straps at the front and the back connect together on sturdy central metal rings which have an inner diameter of 2.5 inches. Chains or cuffs can be attached to either/or both of these. The back straps are entirely adjustable with metal buckle fastenings. 100% leather excluding trim. One size fits most.