# Cuffs > Cuffs are wrist or ankle restraints. Why padded leather beats metal handcuffs, the two-finger rule, and the warning signs that mean they come off at once. - Canonical URL: https://consensualspanking.co.uk/glossary/cuffs/ - Section: A–Z - Updated: November 2026 (2026-11-01) - Audience: consenting adults over 18 only. Everything on this site concerns consenting adults over 18. Restraints that go round a wrist or an ankle. Simple equipment with one genuine hazard, which is nerve compression, and one genuine requirement, which is that somebody stays in the room. --- ## In short - Cuffs are wrist or ankle restraints, usually padded leather or neoprene with a buckle or a clip. - Two fingers should slide between cuff and skin. Tingling, numbness or cold fingers means take them off. - Never leave a restrained person alone, and keep the key or safety scissors within arm reach. - If the arms are restrained, a verbal [safe word](https://consensualspanking.co.uk/guide/safe-words/) is not enough on its own. ## What it means A cuff is a band that goes round a wrist or ankle and can be fastened to something else: another cuff, a bed frame, a spreader bar, a rack. Most are padded leather or neoprene with a buckle and a D-ring. Metal handcuffs exist and are the worst common option, because they concentrate pressure on a narrow line and ratchet tighter under load. In spanking and discipline play, cuffs mostly do one of two jobs. They hold a position that would otherwise take concentration to maintain, which lets somebody stop managing their own body. Or they remove the option of moving, which is a psychological effect rather than a mechanical necessity. ## In practice The rule I use is two fingers under the cuff, checked with my own hand rather than by asking, and rechecked every few minutes. The nerves at the wrist sit very close to the surface, and compression there does damage far more quietly than pain does. Warning signs are pins and needles, numbness, fingers going cold or white, and weakness in the grip afterwards. Any of those means the cuff comes off, straight away, without a discussion. Have the release to hand. Buckles I can undo blind, or a pair of blunt-nosed safety scissors on the side. If metal cuffs are involved, the key stays in the room and preferably in a pocket, and they should be double-locked so they cannot ratchet further. Nobody restrained gets left alone, even for two minutes to answer the door. That rule is what makes restraint reasonable at all. Position matters more than people think. Arms held behind the back over a knee, for example, compresses the shoulder and restricts breathing in a position where the head is already low. See [positions](https://consensualspanking.co.uk/guide/positions/). ## What gets misunderstood Assuming restraint replaces attention. It does the reverse. Somebody who cannot move cannot flinch away, cannot shift when a stroke lands badly and cannot brace, so the top has to read them more carefully rather than less. The other frequent mistake is forgetting that speech can go. People deep in a scene often cannot find words, and if the hands are tied, the usual physical signals are gone too, so agree something else: a number of stamps, a held object dropped from a hand that is still free, or a top who asks for a colour every couple of minutes. Test it before you start. ## Read next - [Safe words](https://consensualspanking.co.uk/guide/safe-words/) - [Positions](https://consensualspanking.co.uk/guide/positions/) - [Restraint](https://consensualspanking.co.uk/glossary/restraint/) - [Check-in](https://consensualspanking.co.uk/glossary/check-in/) ## Common questions ### Are handcuffs safe for bondage? Metal police-style handcuffs are a poor choice because they have a narrow hard edge that presses on the wrist nerves and they tighten if the wearer pulls. Padded leather or neoprene cuffs spread the load across a wider band and buckle rather than ratchet. If you use metal cuffs at all, use double-locking ones and keep the key in the room. ### How tight should restraints be? You should be able to slide two fingers between the cuff and the skin comfortably. Numbness, tingling, cold fingers or a change in colour means the restraint is too tight or badly placed and should come off immediately. Check by touch every few minutes, because the person wearing them will often not mention it.