The Strict Leather Standard Leather Locking Cuffs are great for those wanting to experiment with bondage. They are affordable and yet still offer a high level of quality. They are durable. good looking. and come with locking buckles for additional security.Measurements: Wrist Cuffs: 8.63 inches in length (4.32 inch in diameter); Ankle Cuffs: 10.5 inches in length (5.25 inch in diameter)Material: Leather and MetalColor: Black