We ship discreetly from
Ottawa, Canada
✦ A P-spot massager that changes the sensation from within. The b-Vibe Expand Plug combines a curved prostate-targeting shape with an expanding inner shaft and built-in vibration, giving you adjustable fullness and powered stimulation in one 4.13" (10.5 cm) insertable silicone design.
What makes an expanding plug different? A conventional plug keeps the same dimensions throughout use. The Expand Plug adds an internal expansion mechanism, letting the insertable shaft change its fullness after comfortable positioning. Because expansion adds pressure from inside the body, start conservatively and increase gradually. New to anal play? Read our Backdoor Play Starter Kit guide before moving into adjustable or larger toys.
The b-Vibe Expand Plug doesn't ask you to choose between fullness and vibration. Its defining feature is an expanding internal shaft paired with powered stimulation, giving you a prostate-focused toy that can change how it feels after it's already comfortably positioned.
The silicone body follows a curved P-spot-targeting profile with a large rounded head, contoured shaft and narrower retention neck. It measures 5.22" (13.26 cm) overall with 4.13" (10.5 cm) insertable, while the head reaches 1.65" (4.18 cm) at its widest point. That's approximately 5.18" (13.1 cm) in circumference before considering the added sensation created by the expansion mechanism.
Once inserted, the expanding inner shaft lets you introduce additional pressure and fullness without swapping to a separate larger toy. At the same time, the built-in vibrating motor sends powered stimulation through the design, layering vibration over the mechanical expansion for a noticeably different experience from a static prostate plug.
The broad curved external base stretches to 4.37" (11.1 cm) across, giving the design a substantial external safety stop as well as space for its controls and mechanics. The supplied product information also describes remote-controlled settings, letting you adjust the powered functions without relying solely on controls directly at the toy.
Explore more prostate-focused and powered options in Wicked Wanda's anal toys collection, or compare different shapes and girths in our butt plug range.
| Measurement | Imperial | Metric |
|---|---|---|
| Overall height / length | 5.22 in | 13.26 cm |
| Insertable length | 4.13 in | 10.5 cm |
| Maximum head diameter | 1.65 in | 4.18 cm |
| Approx. max circumference | 5.18 in | 13.1 cm |
| Neck diameter | 0.87 in | 2.22 cm |
| Overall base width | 4.37 in | 11.1 cm |
| Rear accent / control section | 1.6 in | 4 cm |
The 1.65" figure is the starting physical diameter shown in the dimensions. Because the toy incorporates an expanding inner mechanism, the sensation of fullness can increase during use. The supplied specifications don't state a separate maximum expanded diameter, so we don't invent one here.
The Expand Plug's core idea is adjustability. Once the curved shaft is positioned comfortably, its internal mechanism can expand to create additional fullness and pressure. That lets you change the sensation without removing the toy and immediately replacing it with something larger.
For prostate-focused use, this is particularly interesting because increased internal pressure can change how firmly the curved massager sits against surrounding anatomy. Rather than relying entirely on thrusting or manual repositioning, you can experiment with the amount of expansion and see how those changes affect the contact you feel.
Vibration provides the second layer. The built-in motor adds powered stimulation through the massager, so the experience isn't limited to static pressure. Expansion changes the physical fullness; vibration changes the character of the stimulation. Used together, they give the Expand Plug a much broader range than a conventional fixed-size, non-powered plug.
Explore one function at a time first. Get comfortable with the plug at its resting size before increasing expansion. Likewise, learn how the vibration feels before combining stronger vibration with more fullness. Separating the variables at first makes it much easier to identify what actually feels best.
| Expanding inner shaft | Changes internal fullness after the plug has been comfortably positioned. |
| Built-in vibration | Adds powered stimulation alongside the pressure created by the expanding mechanism. |
| Prostate-targeting curve | The insertable profile is shaped specifically around P-spot stimulation. |
| 1.65" rounded head | The widest fixed measurement is 4.18 cm across, or approximately 5.18" (13.1 cm) in circumference. |
| 4.13" insertable length | Provides 10.5 cm of stated insertable length within the curved prostate-focused design. |
| 0.87" retention neck | The shaft narrows to approximately 2.22 cm below the fuller head. |
| Remote-controlled settings | Supplied product information describes remote operation for adjusting the powered experience. |
| Broad curved base | The external section spans approximately 4.37" (11.1 cm) and remains outside the body during use. |
| Silicone construction | A smooth black silicone exterior covers the distinctive expanding P-spot design. |
| Adjustable rather than fixed | Lets you explore changes in internal pressure without immediately moving to a separate larger toy. |
| Discreet shipping | Plain packaging with no product names or adult-store branding on the outside. |
This isn't the same as starting with a small training plug. At 1.65" (4.18 cm) across before expansion is introduced, the Expand Plug already has meaningful girth. If you're still working toward that size, browse smaller butt plugs first and progress gradually.
Begin with the expansion function at its resting or least-expanded state. Give yourself plenty of time to relax and apply generous water-based lube to both yourself and the full insertable portion of the silicone shaft.
Introduce the rounded head slowly, following the natural curve of the P-spot design. The head already reaches 1.65" (4.18 cm) at its widest point, so pause whenever necessary rather than pushing through resistance. Once inserted comfortably, allow the toy to settle toward its narrower 0.87" (2.22 cm) neck while keeping the entire external base outside the body.
Only then begin experimenting with expansion. Increase fullness gradually and give yourself time to evaluate each change before adding more. If the sensation shifts from comfortable pressure into pain, numbness or significant discomfort, reduce the expansion or stop.
Explore vibration separately at first, then begin combining the two functions once you're familiar with each. Remote-controlled operation can make adjustments easier during use, particularly when a partner is involved.
The plug measures 5.22" (13.26 cm) overall with 4.13" (10.5 cm) insertable. Its rounded head reaches 1.65" (4.18 cm) in maximum diameter, equal to approximately 5.18" (13.1 cm) in circumference before the expansion mechanism is considered.
Diameter. The 1.65" (4.18 cm) specification measures straight across the widest portion of the head. The corresponding circumference is approximately 5.18" (13.1 cm).
The manufacturer-provided insertable length is 4.13" (10.5 cm). Overall length is 5.22" (13.26 cm), including the external portions of the design.
The supplied specifications confirm an expanding inner shaft but don't provide a separate maximum expanded diameter. We therefore don't estimate an expanded measurement. The stated 1.65" (4.18 cm) figure refers to the widest head measurement shown in the supplied dimensions.
Use the toy at its resting or least-expanded size for insertion and only begin increasing fullness once it is comfortably positioned. Expansion should be gradual and should never be forced through discomfort.
Yes. It has a built-in vibrating motor, allowing powered stimulation to be combined with the changing pressure created by its expanding internal mechanism.
The supplied product description states that it uses remote-controlled settings. No specific remote range or number of settings was supplied, so we don't add unsupported figures.
Yes. b-Vibe positions it as a Prostate Expanding Stimulator, and the toy uses a curved shaft and enlarged head shaped specifically for P-spot targeting.
With a 1.65" (4.18 cm) maximum head diameter before using the expansion feature, this is more substantial than many introductory anal toys. If you're completely new, starting with a smaller butt plug and progressing gradually may make more sense.
Use plenty of water-based lubricant with the silicone surface and reapply whenever needed. Browse Wicked Wanda's water-based lube collection or our complete lubricant range.
♥ Wondering whether an expanding plug is right for you? Wicked Wanda's is a real Ottawa shop, and we're happy to help you compare fixed-size plugs, expanding designs, prostate-focused shapes and actual diameters before you buy. Prefer shopping privately from home? We ship discreetly throughout Canada, with local Ottawa delivery available on select items.
Explore adjustable fullness, curved P-spot targeting and powered vibration in one expanding silicone massager — available with discreet Canada-wide shipping or in person at Wicked Wanda's Ottawa.
For adult use only. Read the complete product information and manufacturer's instructions before use. Insert at the resting size, increase expansion gradually, use generous lubricant, keep the external base outside the body, never force insertion or expansion, and stop if you experience pain, numbness or significant discomfort.
