If you like your insertable electrodes with a satisfying bit of weight, the E-WMCBP 2.0 certainly delivers. It is E-Stim Systems’ electrified take on Mr S Leather’s wonderfully named “World’s Most Comfortable Butt Plug” – remade in solid metal and available in two decidedly substantial sizes.

The gently faceted head helps with insertion, while the slimmer neck allows the plug to settle securely into place. Its broad, slightly angled base keeps everything safely where it belongs and makes the electrode much easier to handle than a smooth, featureless lump of metal.

What makes the E-WMCBP particularly interesting for e-stim is the way its two conductive sections are arranged. Instead of being divided vertically into left and right halves, the electrode is split between the head and the lower section. This creates a sensation that travels along the length of the plug and can work especially well with pulsing patterns. It feels quite different from a conventionally split bipolar electrode and is one of the main reasons to choose the E-WMCBP over a more ordinary metal insertable.

Despite its cheeky name, this is not a small or timid electrode. Even the Medium measures 38mm across and weighs 275g, giving it a noticeable sense of fullness and weight. The Large increases that to 44mm and a rather impressive 384g. If 38mm already sounds like plenty, choose the Medium. The Large is intended for people who already know that they comfortably enjoy bigger insertables – it is only 6mm wider, but in use that difference is far from trivial.

Both versions are made from solid aircraft-grade alloy with E-Stim Systems’ smooth satin finish. They can be dismantled for thorough cleaning and come with a protective storage tube. Two heavy-duty 4mm sockets are built into the base: one underneath and one in the rim. The side-facing socket is particularly useful with a low-profile cable when you want less connector sticking out beneath the electrode.

You will need a suitable two-pole 4mm e-stim cable to connect the E-WMCBP to your control box.

Which size should I choose?

Medium is the more approachable of the two, although we would still describe it as a generously sized plug rather than a beginner’s insertable. It is the sensible choice if you want the E-WMCBP shape and weight without immediately going for the biggest version.

Large provides more stretch, greater insertable length and over 100g of additional weight. Choose this one if you are already comfortable with plugs around 44mm in diameter and want the fuller, heavier experience. This is not the occasion for aspirational sizing – pick the one you will actually enjoy using.

Specifications

Large

• Maximum diameter: 44mm

• Overall length: 139mm

• Insertable length: 118mm

• Weight: 384g

• Connections: two 4mm sockets

Both sizes

• Bipolar insertable electrode

• Solid aircraft-grade alloy construction

• Satin metal finish

• Top-to-bottom electrical split

• Removable sections for thorough cleaning

• Protective storage tube

• E-Stim Systems lifetime guarantee

Using and caring for your E-WMCBP

Apply plenty of water-based lubricant before insertion. Water-based lube also helps maintain good electrical contact between the electrode and the body. Do not use silicone or hybrid lubricants with this electrode.

Begin with your control box switched off or turned fully down. Once the electrode is comfortably in place, connect it and gradually increase the intensity.

After use, disconnect the electrode and dismantle it for cleaning. Wash the separate parts with warm water and mild, fragrance-free soap or a suitable toy cleaner, taking care to clean around the joint and threads. Rinse thoroughly and allow every part to air-dry completely before reassembly. Avoid caustic or strongly alkaline cleaning products.

Please note: a compatible 4mm cable is required and should be selected to suit your control box.