Hand and ankle cuffs are a simple way to confine someone's limbs. Cuffs are meant for securing your partner from movements, when you plan to play with sensory devices or other sex toys, like vibes and dildos, flogging and etc. Hand and ankle cuffs have Velcro or buckle fasteners. Velcro fastener is a kind of "hook and loop", which is easy to get free of. Buckle fastener is attached with D-ring, which makes them firmer and let your hands or ankles fixed to the rope or connectors, enabling their attachment to bed or other furniture. Cuffs are versatile in their materials, but most common go from leather, nylon, rubber and fur, covering metal.