Master Series Urethral Sound Trainer Set Silicone

What This Sound Trainer Set Is

The Master Series Urethral Sound Trainer Set from XR Brands is a three-piece kit of flexible silicone urethral sounds for people exploring sounding. Each rod is double-ended with a different girth on each side, so the set gives you six diameters in a logical progression. Advanced users get a tidy range of sizes in one kit.

Build & Quality

All three rods are made from premium silicone that is non-porous, phthalate-free and latex-free. The non-porous surface is what makes this set practical: the sounds are easy to sterilize between sessions, and there is no textured seam or pocket where residue can sit. The finish is smooth and uniform from tip to tip. In hand the rods feel light. The whole kit weighs just 0.21 lbs.

The silicone has real give. Rather than a rigid metal rod, each sound bends with the body and follows the natural curve of the shaft as it slides in. That flexibility is the defining trait of this kit and the reason many people choose silicone over steel.

Sizing & Design Details

Every sound measures 8 inches in total length, with 7.5 inches of insertable length. The sizing is laid out clearly:

• Small sound: 0.19 inch on one end, 0.23 inch on the other
• Medium sound: 0.27 inch and 0.32 inch
• Large sound: 0.34 inch and 0.38 inch
• Double-sided design puts two girths on every rod
• Bright blue color makes each piece easy to spot and keep organized

Comfort & Fit

The graduated steps are small and even, so moving from one end to the next feels like a gradual change rather than a jump. You can start with the 0.19 inch tip and work up toward the 0.38 inch end at your own pace. Because the silicone flexes, the fit feels responsive instead of stiff, and the slick surface glides well with a water-based lubricant. There are no clasps or fasteners to manage. Just three clean, simple rods with consistent sizing.