Using these Coquette Black Vegan Leather Handcuffs is easy. First, open the buckle closures and place the handcuffs around your wrist. Then, adjust the buckle to fit your wrist size within the 5.9” - 8.25” (15 - 21cm) range for a comfortable and secure fit. You can use the large metal opening ring for different play scenarios, and if you have a clip - on leash or rope (sold separately), you can attach it for added fun. When it comes to maintenance, wipe the vegan leather with a soft, dry cloth after each use. Keep them in a cool, dry place away from direct sunlight. Avoid using harsh chemicals or abrasive materials on the handcuffs as this may damage the leather and the rose gold accents. Also, always check the metal parts for any signs of wear and tear before use to ensure your safety.