The SSND-MRB 11.5-14.5mm is an intermediate-tier ribbed silicone urethral sound engineered for dynamic internal stimulation and precise anatomical dilation. Built upon the trusted architectural design of our long-standing MRB 11-14 model, this shaft trades smooth linear tapers for a series of defined, repeating rib contours. The third rib serves as the primary focal point, reaching a maximum diameter of 14.5 mm (43.5 Fr) to create a pronounced point of stimulation before relaxing into variable shaft steps. Cast in platinum-cured silicone, it ensures superior body-safe flexibility while maintaining structural firmness during insertion, available in both solid core and open-bore configurations.

• Entry Tip: Smoothly tapered leading bead starting at 11.5 mm for gradual initial entry and canal alignment.

• Ribbed Shaft Progression: Multiple calculated ribs featuring varied diameter steps, anchored by a 14.5 mm (43.5 Fr) peak at the third rib.

• Peak Diameters: Varies continuously between 11.5 mm (34.5 Fr) and the primary 14.5 mm (43.5 Fr) ridge.

• Retention Valley: A narrow 9.7 mm (29.1 Fr) channel situated just above the base to anchor comfortably for extended wear.

• Safety Flange: A wide 17.7 mm flared base designed to prevent over-insertion and allow easy handling.

Anatomical Depth Guide Providing a dedicated insertable length of 7.75 inches (197 mm) and an overall total length of 8.25 inches (210 mm), the MRB 11.5-14.5mm offers broad reach within the urethral canal. The extended proportions ensure users can comfortably achieve deep placement while maintaining complete control via the external safety flange.

Dimension & Sizing Profile

👑 Bob's Choice Recommendations

• Experience Level: Intermediate (12mm – 15mm maximum diameter tier)

• The Prime Durometer Recommendation: We strongly recommend our #10 (Medium) silicone density as the default primary choice. This firmness provides crucial structural integrity, preventing the shaft from bowing or buckling during insertion while delivering crisp, high-definition tactile feedback across each rib contour.

Color Options: #18 and #30 are available in pure translucent. #00-20, #00-50, and #10 base colors are translucent white and can be mixed with any standard color.

⚠️ Important Safety Disclaimer: Because individual anatomy varies, we cannot guarantee a full fit for all longer or larger diameter pieces. Please use all products with care. By purchasing, you accept full responsibility for safe use. If you experience discomfort, discontinue use immediately.