SSND-MDCUBE
- In stock, ready to ship
Recommended for open bore options
Cubed Multi-Dimensional Silicone Stretching Sound
Introducing our revolutionary CUBED (squared) design, now engineered for our multi-dimensional flexible urethral stretching sound family. Combining the gradual expansion of our MD 12-21mm series with the distinct squared characteristics of our original MRB-CUBE, this advanced probe is designed for the seasoned sounder ready to step up into more aggressive, larger-scale stretching.
Featuring a 9-segment, smooth-edged geometric profile, each stage gradually steps up to the next larger diameter with minimal retention valleys in between, allowing for a smooth and controlled transition.
Technical Profile
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Total Length: 9"
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Insertable Length: 8.5" (up to the base flange)
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Base Retention Valley: 20mm (60Fr) diameter located just in front of the flange.
Segment-by-Segment Dimensions
This multi-dimensional sound features 9 distinct, graduated geometric segments. Each step lists the peak stretching diameter followed by its accompanying retention valley:
| Segment | Peak Diameter | Valley Diameter | French Size (Peak / Valley) |
| 1 (Tip) | 11.0 mm | 10.0 mm | 33 Fr / 30 Fr |
| 2 | 12.5 mm | 11.5 mm | 37 Fr / 34 Fr |
| 3 | 13.0 mm | 11.5 mm | 39 Fr / 34 Fr |
| 4 | 15.0 mm | 13.0 mm | 45 Fr / 39 Fr |
| 5 | 15.5 mm | 13.5 mm | 47 Fr / 40 Fr |
| 6 | 18.0 mm | 15.5 mm | 54 Fr / 47 Fr |
| 7 | 19.5 mm | 18.0 mm | 59 Fr / 54 Fr |
| 8 | 21.5 mm | 20.5 mm | 65 Fr / 62 Fr |
| 9 (Base) | 24.0 mm | 20.0 mm | 72 Fr / 60 Fr |
(Please refer to our cross-sectional labeled product photos for an up-close, detailed visual assessment of these dimensions.)
Configuration Options
Tailor the core configuration of your hardware to meet your specific wear requirements:
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Open Core: Features an internal channel to accommodate fluid drainage, making it ideal for extended-length wear. Select your open core parameters from the dropdown menu.
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Solid Configuration: A completely solid plug profile for dedicated stretching and maximum presence.
Material Firmness & Sensory Performance
The unique physics of this design means the sound remains highly flexible in its narrower sections, while firmness increases with the diameter. Choose your ideal Shore hardness to customize the experience:
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#00-20 & #00-50 (Compressible Softness): These ultra-soft, spongy, skin-like options are highly compressible. They are ideal for gentle, continuous expansion, as the material naturally compresses during insertion and then exerts a steady outward pressure to safely step up the tissue. #00-20 provides the maximum level of compression.
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#10 (Moderately Soft): A balanced middle ground that offers a supple, flexible feel while holding its structural shape under pressure. It provides a comfortable, smooth stretch with a bit more presence than the compressible ranges.
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#18 (Recommended Medium): Offers a moderate level of stiffness, providing excellent structural feedback and crisp geometric transitions while retaining necessary body compliance.
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#30 (Firm): Provides maximum rigidity and direct feedback for experienced users.
Color & Finish Guide
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Translucent White Base (#00-20, #00-50, and #10): These levels feature a natural translucent white base, which can be fully customized with any of our standard color selections.
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Pure Translucent (#18 and #30): Our firmest silicone grades are the only options available in a perfectly clear, pure translucent finish.
Pro-tip: Pair this advanced geometric profile with liberal amounts of high-quality water-based lubricant (like System JO H2O) to ensure a smooth, incredibly stimulating experience during long-term wear.
Thank you and enjoy!