SSND-MRB 7 Rib 11-14mm - 33-40Fr 8" Unique Ribbed Silicone Sound

Due to many requests from our customers, we have added this multi-dimensional flexible urethral sound that features a unique hold-in-place valley, or groove, near the base—clearly visible in the product photos. With its uniquely double-tapered and rounded style tip, it gets your attention right from the start. The third rib is the largest, making for a very noticeable and stimulating moment as it moves down the urethra and settles into the midpoint of the shaft.

Following the initial tip and ribs, the five subsequent segments vary in both length and diameter for the next five inches, building a complex and satisfying series of sensations before reaching the elongated retention valley just in front of the flared safety flange. The total insertable length is approximately 7.5 inches (190 mm).

This probe is available in both solid and open-core configurations, making it suitable for extended-length wear or drainage, depending on your preference.

The sound has 7 individual ribs, each with their own shape and diameter—including the gently tapered tip. The first rib at the tip is approximately 11 mm, followed by a slightly larger second rib, and then the largest rib at approximately 14 mm in the third position. The next three ribs are slightly smaller at around 13 mm, and the final rib tapers to 12.5 mm. This is followed by a 9 mm valley just before the base flange, which is approximately 0.5 inches in length.

This sound is designed to be both stimulating and comfortable, especially during longer sessions. The #0050 silicone is especially soft and compressible—offering gentle outward pressure while inserted and adapting fluidly to your body. Do note that very soft, worm-like silicone like this may require more lubricant and a bit more patience during insertion, but the sensations it offers are often well worth the effort.

The #18 and #30 silicone types are available in pure translucent. The #00-50 and #10 base colors are a translucent white and can be blended with any of our standard color options.

Thank you and enjoy!