Invasion Silicone Urethral Sound Trainer Set

The first slide of the silicone urethral sound sends a pulse through your core—that slow, deliberate stretch as the flexible rod finds its path, bending with your body's natural curve. Your breath catches as the premium silicone glides deeper, each millimeter opening something raw and electric. The graduated progression becomes addictive.

These double-sided trainers give you six distinct experiences in one body safe kit, each 8-inch rod offering two different girths to work your way through. The phthalate-free silicone flexes and responds, moving with you rather than against you, while the non-porous surface sterilizes completely between sessions. From the smallest at 0.19 inches to the largest at 0.38 inches, each diameter challenges you to go deeper.

What starts as careful exploration becomes hungry demand—your body learning to crave that full, stretching sensation as each silicone urethral sound opens you wider. The flexible design follows every contour, delivering that unique pressure that builds from the inside out. It's not just about the stretch—it's about the surrender.

Product Features:

• Premium phthalate-free, non-porous silicone construction
• Set of 3 double-sided sounds, 6 total diameters
• Dimensions: 8 inches length each
• Smallest sound: 0.19" and 0.23" diameters
• Medium sound: 0.27" and 0.32" diameters
• Large sound: 0.34" and 0.38" diameters
• Flexible rods that bend with body contours
• Body safe and easy to sterilize
• Graduated sizing for progressive training

Usage Tip:

Start with the smallest diameter and plenty of sterile lubricant, letting the flexible silicone guide the pace—your body will tell you when it's ready for the next size up.