Comfortable cuffs are important, but they also need to get the job done, securing your partner. I designed these with locking buckles, so you can use them alone or with a padlock for a little extra excitement. Nothing says you are Mine like the click of a padlock. -Mistress Isabella Sinclaire Made of durable, premium leather with a supple yet durable feel, these premium cuffs feature silver hardware, nickel-free metal, and an optional locking buckle for extra security. The snap hook chain at the center removes easily, and the D-ring allows you attach ropes, chains, or other accessories as you desire. Measurements: Adjustable from 11.5 to 13 inches in circumference, 2 inches wide Material: Leather, metal Color: Black Note: 2 cuffs with connector chain included