Heavy duty nickle plated steel leg cuffs with a welded chain. These are a larger size than regular handcuffs, specifically designed for ankles. They will not open without the key (comes with two keys). They feature the double loking feature, so they will not over tighten in use (see our youtube channel for a video on how to use this and full instructions come with the cuffs.)
Great fun for prisoner scenarios, and heavy duty bondage play.