Intermediate · 6 min read
Materials: Silicone vs TPE and Everything Else
Porosity, sterilisation, durometer and why 'body-safe' on a box means nothing on its own.
Sex toys are unregulated in most markets. "Body-safe", "medical grade" and "hypoallergenic" are marketing terms with no enforced definition. What actually matters is porosity and what the material is made from.
Non-porous materials
These can be fully sanitised, do not harbour bacteria, and are the only sensible choice for anal use.
- Platinum-cure silicone. Flexible, warms to body temperature, durable for years. The standard.
- Borosilicate glass. Rigid, non-reactive, excellent for temperature play, dishwasher safe.
- Stainless steel. Heavy, rigid, sterilisable, very long-lived.
- ABS plastic. Hard, non-porous, common in bullets and vibrator shells.
Porous materials
These have a microscopic open structure that traps fluid and bacteria and cannot be sterilised.
- TPE and TPR. Soft, cheap, extremely common. Fine to know about; poor for anal use.
- Jelly rubber and PVC. Often contain phthalate plasticisers. Frequently have a distinct chemical smell. Avoid.
- "Realistic" blends. Marketing names for TPE variants in most cases.
If a porous toy is your only option, always use a condom on it and treat it as disposable.
Reading durometer
Shore A hardness describes firmness. Roughly:
- 00–10A: very soft, floppy, hard to insert without a harness.
- 10–20A: soft with a firm core. Comfortable and common for anal.
- 30A and up: firm. Better for precise prostate pressure, less forgiving.
Dual-density toys pair a firm core with a soft outer layer and are generally the most comfortable option once you know what you like.
Practical buying rules
- If the price seems impossibly low for the size, it is TPE.
- If the box will not name the material, assume porous.
- If it smells strongly out of the packaging, do not use it.
- Buy from retailers who publish material specifications. Reputable ones always do.
This article is general education for adults, not medical advice. If you have a health condition, take medication that affects bleeding, or experience persistent pain or bleeding, speak with a clinician.
