Comparison
Plastic vs metal chastity cage.
Plastic (resin, polycarbonate) cages are light, cheap, hygienic, and the safest first cage to size correctly. Metal cages (stainless or zinc alloy) are denser, more durable, more secure, and demand more accurate sizing because they do not yield. Almost every long-term keyholder couple starts with plastic and moves to metal once sizing is dialled in.
| Spec | Plastic cage | Metal cage |
|---|---|---|
| Weight | ~50-100 g | ~150-450 g |
| Hygiene cleanability | Excellent (boil-safe) | Excellent (boil-safe) |
| Security | Moderate (yields under force) | High (does not yield) |
| Sizing forgiveness | Slight (resin can stretch) | None |
| Travel / TSA-safe | Yes (polycarbonate undetected) | No (metal detector + xray) |
| Lifespan | ~2-5 years (UV, cracks) | Indefinite |
| UK entry price | ~£30-£60 | ~£50-£120 |
| Premium tier | ~£90-£150 (Holy Trainer) | ~£150-£400 (custom UK steel) |
The verdict
Plastic first, always. Use a sizing kit (CB-6000, Holy Trainer Nano) to dial in cage length and base-ring diameter over 2-4 weeks. Only then move to metal. Sleeping in either is a buyer-by-buyer decision; sleeping in a wrongly-sized metal cage is a hospital visit. Both require daily hygiene and immediate removal for any sharp pain, numbness, or discolouration.
For the longer read, see the full guide →