If you're into serious stretch with total control, the 5" Expand Inflatable Butt Plug by Master Series delivers everything you need to dial in the intensity. Slide it in deflated, then pump it up until you're pushed to your personal edge — and beyond.

This hardcore toy is all about customizable fullness. The slim profile makes initial entry smooth, but with every squeeze of the bulb, that inflatable body swells up to fill you deep and wide. A narrow neck keeps it locked inside once you're there, and the flared base ensures it won't go further than it should.

Once inflated, the valve holds pressure perfectly — even when disconnected — giving you freedom to move, grind, or stay fully stretched until you're ready to let go. The perfect tool for guys who want to build pressure slowly, precisely, and on their terms.

• Inflatable design – deflate for easy entry, then pump to your ideal stretch
• Easy-squeeze bulb – gives you hands-on control over inflation intensity
• Narrow neck – locks the plug in place once inflated
• Flared safety base – prevents over-insertion and adds confidence
• Valve control – maintains pressure even after disconnecting the pump

SPECS:
• Total Length: 5"
• Insertable Length: 4"
• Diameter (Uninflated): 1.5"
• Inflated Length: up to 6"
• Inflated Diameter: up to 4.5"
• Material: Latex, rubber

5" Expand Inflatable Butt Plug is ideal for men looking to experiment with progressive fullness and pressure play. Inflatable plugs are the ultimate solo play tool for guys who want to customize their stretch and train their hole to take more over time.

Naughty Boy is your trusted source for extreme male toys — and we know what it takes to play deep.

Add it to your cart and pump with precision.