Every toy review online talks about length, girth, vibration patterns and suction strength. Almost none of them talk about the only specification that actually touches your body for an extended period of time: what the thing is made of.
Material decides three things at once — whether a toy is safe for mucous membranes, whether it can be properly cleaned, and whether it will still be in good condition a year from now. Get that part right and everything else becomes a matter of taste. Get it wrong and no amount of clever design saves you.
Why material comes before shape, size or price
The skin and mucous membranes of the genitals and anus are thinner, more vascular and more permeable than the skin on your arm. They also sit in a warm, moist environment. That combination means two things matter far more here than anywhere else on the body: what the material releases, and what the material traps.
That is the whole conversation. Non-toxic and non-porous — those are the two boxes to tick.
The three families of sex toy materials
1. Silicone (platinum-cure) — the standard to beat
Silicone is a synthetic polymer built on a silicon–oxygen backbone. Once cured, it is chemically stable, non-porous, hypoallergenic in almost all cases, and free of the plasticisers that make cheap toys smell like a hardware store.
The important distinction is the curing method. Platinum-cure silicone uses a platinum catalyst and leaves essentially no by-products behind. Tin-cure (condensation) silicone is cheaper but can release by-products and has a shorter working life. When a maker says "platinum-cure", that is the good sign.
Silicone is also the material that tolerates heat, which is why it can be washed in hot water and, for 100% silicone pieces with no motors, sanitised more aggressively.
The trade-offs are honest ones: silicone costs more, it cannot be melted and re-moulded into hyper-realistic skin textures the way TPE can, and it should never be paired with silicone-based lubricant.
2. TPE / TPR — soft, cheap, and porous
Thermoplastic elastomer (TPE) and thermoplastic rubber (TPR) are the soft, stretchy, slightly "gummy" materials behind most budget masturbators and many strokers. They feel wonderful, they are inexpensive, and they can be moulded into very fine internal textures.
The catch is structure. TPE is porous at a microscopic level. Those pores hold moisture, lubricant residue and bacteria, and they cannot be fully cleaned out. TPE toys are also oil-based, so they degrade over time: they sweat a light oily film, they discolour, and they eventually tear. Their realistic lifespan is measured in months, not years.
TPE is not automatically dangerous — a well-made TPE toy used with a condom and replaced regularly is a defensible choice. It is simply not the material you choose when you want something you can clean completely and keep.
3. PVC, "jelly" and rubber — the ones to avoid
Anything sold as jelly, crystal jelly, realistic skin or plain rubber is usually PVC or a mystery blend softened with plasticisers — most famously phthalates. Phthalates are not chemically bonded to the plastic; they migrate out of it. That is exactly why a cheap toy smells strongly of plastic when you open the bag, and why that smell does not go away.
This is the category to skip. Not because it is guaranteed to cause harm in every case, but because you cannot clean it properly, you cannot verify what is in it, and there are safe alternatives at every price point.
What "non-toxic" actually means
"Non-toxic" on a product page is marketing until you attach it to something specific. The concrete, checkable version is:
- Phthalate-free. No plasticisers that migrate out of the material.
- Non-porous. Nothing can soak in, so nothing can be trapped.
- No latex, no unknown fillers. Reduces the chance of an allergic reaction.
- Body-safe and skin-safe. The material is intended for prolonged contact with skin and mucous membranes — not repurposed from industrial or automotive rubber.
- Declared by the maker. A supplier who can name the material, the cure method and the shore (firmness) rating has nothing to hide.
That last point is the real filter. Manufacturers who use cheap blends keep the material vague on purpose. Manufacturers who use good silicone say so loudly, and they will happily tell you more if you ask.
How to check before you buy: a 60-second checklist
- Does the listing name the material? "Silicone" is a start; "platinum-cure silicone" is better. "Jelly", "TPE blend" or no mention at all is a no.
- Does it smell? A strong chemical or plastic odour on a new toy is a signal. Good silicone has little or no smell.
- Does it feel oily? An oily sheen that returns after washing means plasticisers are still migrating to the surface.
- Is the price impossible? Real silicone costs money. A large, detailed, motorised toy for the price of a sandwich is not silicone.
- Does the maker answer questions? Ask whether it is phthalate-free and non-porous. A straight answer is worth more than any badge.
How YearnWoven chooses materials
Our fantasy pieces — from the woven tentacle designs through to the powered models — are made from body-safe silicone. That decision was not aesthetic. The sculpted ridges and suckers that give these toys their character are also the places where a porous material would trap residue permanently, and where a plasticised one would keep leaching. A non-porous surface is what allows you to clean the detail properly, and it is what lets the piece survive handling after handling.
We also keep the two categories separate in our own storage and recommend the same at home: silicone pieces should not be stored in contact with TPE or jelly pieces, because the plasticisers in the cheaper material will migrate onto the silicone surface and leave it tacky.
FAQ
Is silicone safe for anal play?
Yes. Body-safe, platinum-cure silicone is one of the most widely recommended materials for anal play because it is non-porous, easy to clean, and compatible with the flared bases that most safe anal toys use.
Can TPE be used safely?
TPE is porous and cannot be fully sanitised, so it is best treated as a shorter-life item and used with a condom if you want a strict hygiene routine.
How do I know if a toy is really silicone?
Look for an explicit material claim, no chemical smell, no oily film, and a price that reflects the material. If in doubt, ask the seller directly.
Does silicone contain phthalates?
Quality silicone does not require plasticisers and is formulated without them. Cheap PVC and jelly blends are where phthalates are normally found.
The bottom line
Buy the material first and the toy second. A body-safe, non-porous silicone piece will be easier to clean, safer to share, kinder to your skin, and — if you look after it — worth keeping. That is the whole reason we build on silicone rather than around it.
Next: [how to clean and care for silicone toys so they last](#) — and [what discreet shipping looks like when you order from us](#).