Master Series Pumper Hollow Inflatable Strap on

Shape & Texture

The Master Series Pumper is a hollow, inflatable strap-on from XR Brands, built into its own elastic harness. It suits a wearer who wants to pump up the girth of a realistic shaft for a partner, and it works with or without an erection. The hollow core leaves room for the wearer, and the outer shell gives the receiving partner a lifelike, veined-style shape.

That shell is a thin layer of supple silicone stretched over a firm, hollow shaft. The result is soft on the surface and steady underneath, so it holds its form during thrusting rather than folding. Squeeze the removable bulb and the shaft swells, gaining thickness a little at a time. You decide where it stops.

Material Feel

The silicone has a smooth, slightly yielding touch with a realistic look. It is non-porous, phthalate-free and latex-free, which makes cleanup simple after each session. Inflation adds girth without making the surface feel stiff or plasticky. The full build combines silicone, ABS plastic and elastic, finished in black.

• Thin supple silicone over a firm hollow shaft
• Removable, easy-to-use inflation bulb
• 1.25 inch hollow interior for wear with or without an erection
• Phthalate-free and latex-free
• Open-back harness design

Size & Fit

A thick, stretchy elastic waistband holds the shaft in place and fits most body shapes and sizes, up to 40 inches around. A second elastic band runs between the balls and along the back of the thighs. That routing keeps the strap-on anchored while leaving the rear completely open, so other play stays on the table. The insertable length is about 7 inches, and the harness is one size fits most, so there are no buckles or extra pieces to fuss with before getting started.