CON SPD 3.25-4.0''

Built strictly for elite, highly experienced size enthusiasts who prioritize low-resistance insertion, absolute threshold containment, and monumental fullness, the large-format CON SPD series scales our proven contour engineering into our most massive dimensions. Rather than staying a fixed length, each model in this heavy-gauge lineup scales proportionally in every single dimension as it grows in diameter. Every curve, length, and angle is symmetrically adjusted so that the signature CON SPD geometry—a very sharply tapered entry tip, a smooth concave slope, and an advanced, high-efficiency retention valley—remains completely consistent as you step up in size.

Symmetrically Scaled Geometry & High-Security Threshold Lock: The Large-Format CON SPD series is meticulously engineered to eliminate initial expansion resistance, making extreme gauge widths feel remarkably uniform and controlled. It guides initial placement with an ultra-slim, sharply tapered starting tip that glides forward as the shaft sweeps outward along an elegant, proportionally elongated concave slope to reach its massive peak expansion swell. Immediately following this peak, the shaft tapers cleanly back down into an integrated, heavy-duty retention valley. Your pelvic floor muscles contract naturally over this structural neck, drawing the appliance flush against an ultra-wide, very secure retention flange that molds to your anatomy for a completely dependable, leak-proof hydraulic seal right at the threshold.

👑 Bob's Choice Recommendations

• Experience Level: Elite Advanced Sizing Only. Ranging from 3.25" up to a monumental 4.0" in diameter, this series features extreme volumetric mass. Bob strongly emphasizes that these appliances are recommended strictly for veteran users who are thoroughly familiar with gradual size progression and advanced threshold training.

• The Prime Material Recommendation: Because solid profiles between 3.25" and 4.0" carry a staggering amount of material mass, Bob’s prime recommendation for most customers in this size range is our #00-20 (very soft) composition. This extra-soft durometer allows the massive expansion swell to compress safely during initial entry, making the long concave taper significantly smoother to manage while keeping an incredibly yielding, plush, and forgiving feel under muscular pressure.

• The Bold Alternative: If you are highly proficient with extreme heavy-gauge expansion and want a slightly more supportive, plush feel that still offers a bit of compressible give, Bob suggests selecting our #00-50 (soft) material.

• The Firmness Caution: Bob heavily cautions that moving up to a #10 (medium) firmness or higher in this specific large-format series results in an incredibly rigid, high-presence barrier. It creates a massive, unyielding structural shape that requires expert proficiency to place and utilize safely.

Color Options: #18 and #30 are available in pure translucent. #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 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.