SilexD Diamond M Fantasy Collection Liquid Silicone Anal Plug 9.2 cm

Blue, brilliant, and it does what you want depending on whether it’s warm or cold

The Diamond M from SilexD’s Fantasy Collection is an anal plug made from double-density liquid silicone with a metallic blue finish that catches the light. This isn’t a basic silicone plug — it’s built with SilexD’s patented SILEXPAN technology, which gives it a two-layer structure: an ultra-soft outer surface that mimics the feel of skin, and a firmer inner core that gives the plug its shape. The result is a toy that deforms under pressure but always returns to its original shape — one that bends but never collapses.

The added feature is thermo-reactivity. SILEXPAN silicone responds to temperature: heat the plug and it becomes even softer and more yielding. Cool it and it hardens, becoming firmer and more present. You literally choose the texture of your toy before each session.

The metallic blue finish of the Fantasy Collection is what sets it apart visually. This isn’t black, this isn’t flesh-toned — it’s an object that owns its identity as a toy, with a sci-fi/fantasy aesthetic that appeals to those tired of basic black.

What SILEXPAN double density really changes

The surface is as soft as skin. Run your finger along the plug and you won’t feel standard hard silicone. You’ll feel a supple, satin material that yields under pressure. It’s this outer layer that makes all the difference at insertion — it conforms to the shape of the sphincter without aggressive resistance.

The core is firm. Beneath the soft layer, the SILEXPAN core gives the plug its structure. This is what prevents the plug from folding in half during insertion and guarantees it holds its teardrop shape once in place. Without this core, the plug would be a useless soft blob. With it, it combines the comfort of softness with the effectiveness of firmness.

Temperature changes everything. Warm the plug in hot (not boiling) water for a few minutes, or submerge it in boiling water for 2 minutes maximum. The silicone softens and the plug becomes ultra-yielding. Insertion is even gentler, and the internal sensation is enveloping and warm. Always check the temperature on your wrist before insertion.

For a firmer plug: place it in the refrigerator for 15–30 minutes (no time limit in the fridge). The silicone hardens and the plug gains rigidity. The insertion sensation is more direct, more pronounced, and the cold creates an exciting thermal contrast against the mucous membranes.

At room temperature: the plug is in its “normal” state — soft on the surface, firm at the core. Already excellent for most uses.

How to use it

Lubricate the plug with a water-based lubricant. The premium silicone is already smooth, but lubricant ensures comfortable insertion. Insert slowly and let your body set the pace. The body warms the plug in real time — it’s automatic temperature play.

What it brings to your play

The double density creates a more realistic filling sensation than a standard silicone plug. The soft layer conforms to the sphincter and rectal walls like flesh, not like plastic. It’s a subtle but very noticeable difference when you switch from a standard plug to SILEXPAN.

Temperature play adds a dimension of infinite variety. The same plug can give you a completely different sensation depending on whether it’s warm, cold, or at room temperature. It’s like having 3 plugs in one.

Care

Clean the plug before and after each use with warm water and mild soap. Silicone is non-porous — thorough cleaning is sufficient. You can also sterilize it by submerging it in boiling water (2 minutes max) or running it through the dishwasher.

Lubricant: water-based only. Silicone-on-silicone contact can degrade the surface.

Store away from dust and separately from other silicone toys to avoid chemical reactions between materials.

Technical specifications

FAQ — Your questions, our answers

Q: What’s the difference from a standard silicone plug?

A standard silicone plug is uniform — the same density throughout. SILEXPAN is double density: soft on the outside, firm at the core. The sensation is more realistic and more comfortable than a classic plug of the same size. It’s a genuinely different feeling.

Q: How do I heat it without burning myself?

Run it under hot tap water for 2–3 minutes — warm but not scalding. Boiling water (2 min max) also works if you prefer a more controlled method. Always test the temperature on your wrist before inserting.

Q: Does the metallic blue color fade?

No. The pigment is embedded in the silicone, not on the surface. The metallic blue keeps its color over time and with repeated cleaning. This is premium-grade silicone, not a coating that flakes.

Q: What level is size M for?

The M at 9.2 cm is an intermediate size. If you’re used to S-size plugs (7–8 cm), moving up to M goes smoothly thanks to SILEXPAN’s softness. The double density makes insertion more comfortable than a rigid plug of the same size. It’s a solid step between the beginner S and the advanced L.