Power Sealed Open Wide 4 Inch Tunnel Plug by NANMA

The Power Sealed Open Wide 4 Inch Tunnel Plug is a substantial anal plug built for experienced users who want deep penetration with a distinctly different sensation. Its hollow tunnel design amplifies awareness of stretch and muscle control, while the tapered tip glides in smoothly and the body widens progressively for complete fullness.

What it does

When inserted, the tapered tip slides past your sphincter smoothly, then the body widens progressively to fill you completely. Rather than pressing against solid material, your inner walls press against the hollow channel instead. This creates a sensation that's distinctly different from regular anal plugs—you feel the rim of the opening while inside, amplifying awareness of every stretch and your own muscle control. Clenching around the empty centre generates heightened sensitivity that cascades upward toward your prostate or deeper pelvic structures.

Arousal builds differently with tunnel plugs because the hollow design amplifies every micro-movement you make. Pressure stays constant against your walls while the tunnel opening creates a focus point where all sensation concentrates. Many users report orgasms arrive suddenly and fiercely because this configuration builds tension in patterns your body isn't accustomed to processing. For those seeking progression in anal play, explore Prostate Dildos as well. Metallic finish holds warmth beautifully, which intensifies contact with sensitive internal tissue.

Specifications

• Insertable length: 4.5 inches (11.4 cm) with tapered tip
• Material: Medical-grade TPE with flexible yet supportive core
• Base design: Wide flared design for security and hands-free wear
• Finish: Metallic sheen with smooth polished surface
• Maintenance: Detachable base section for simplified cleaning
• Compatibility: Non-porous construction suitable for all water-based lubricants

Size and first use

At 4.5 inches insertable length, this plug suits most body frames, but the width demands genuine readiness rather than casual experimentation. Begin by relaxing completely—this isn't a plug to rush. Apply generous water-based lubricant to both the tapered tip and your opening, then position yourself on hands and knees or leaning forward. Guide the narrow tip inside first, letting your sphincter adjust around the taper before pressing deeper. Once the widest part passes through, the flared base seats against your cheeks and locks everything in place. Cockringshop specialise in products for men and couples, and stock a range of sizes and styles so you can work up progressively.

How to use it

Once seated, experiment with slow clenching cycles to awaken nerve endings around the tunnel opening. Rock your hips gently forward and back to shift pressure zones, then hold still to let sensation pool and deepen. After several minutes of this building contact, increase your movement intensity as arousal peaks.

Many users find grinding against the base while squeezing rhythmically creates the mounting tension needed for serious climax—the combination of fullness and the hollow channel structure working together to overwhelm your senses. After use, clean thoroughly with warm water; the detachable base makes this straightforward. Allow to air dry completely before storage.

Feature breakdown

Who it suits

This plug works best for people with prior anal experience who've trained their bodies past basic insertion and want progression toward extended wear or more challenging play. Solo users benefit from hands-free security during sessions, while partnered play opens possibilities for wearing during foreplay or other shared activity. Your body needs genuine readiness rather than curiosity alone.

Skip this if you're new to anal play or prefer solid plugs without hollow centres. If you find the 4.5-inch length daunting or haven't yet trained your body around wider insertions, start with smaller sizes first. The tunnel design is specific—it's not for everyone, and that's fine. Honest self-assessment matters more than pushing into something that doesn't suit you.

How it compares

Tunnel plugs differ fundamentally from solid plugs in how they build sensation. Solid plugs create uniform pressure against your inner walls; tunnel plugs concentrate sensation around the hollow opening, amplifying awareness of your own muscle control and creating different arousal patterns. Slide Easy Prostate Plugs offer a solid, supportive design focused on direct prostate contact. Choose a tunnel plug if you want heightened sensitivity and micro-movement awareness; choose a solid design if you prefer constant, uniform pressure and straightforward stimulation.

What you can use it with

Pair this plug with Cock Ring Sets during partnered play or solo sessions. While the plug handles depth and internal sensation, a cock ring maintains erection firmness and enhances blood flow, so arousal builds in both directions simultaneously. Together they create layered sensation—fullness inside combined with external support and heightened sensitivity, intensifying climax when it arrives.

More from NANMA Corporation

NANMA Corporation designs anal plugs and prostate toys for experienced users seeking progression and specific sensations. Nanma Corporation offers a full range of sizes, styles, and materials. Explore the broader collection to find other designs that match your body and your preferences.

Read more before you buy

Not sure whether a tunnel plug is right for you, or how to choose between different styles? How To Choose A Butt Plug walks through the main types and what to consider before you buy.

Why buy the Power Sealed Open Wide 4 Inch Tunnel Plug by NANMA

Looking for the right fit and the right material? The Power Sealed Open Wide 4 Inch Tunnel Plug by NANMA is genuine, function-tested, and quality-checked. The Cock Ring Store stocks it in ready-to-use condition, ships it in discreet packaging, and backs it with plain-packaged delivery. Cockringshop handles the process from order to arrival so you can focus on what matters. Real fit advice, body-safe materials, and plain-packaged shipping. The Cock Ring Store ships discreetly Australia-wide.