The Tantus Severin is a two-tier silicone anal plug built around a long neck and a graduated bulb — designed specifically to make working up to a larger plug easier and safer, rather than asking the body to commit to a single circumference all at once. Tantus, a California-based gender-neutral toy maker that has been pouring 100% Ultra-Premium silicone since 1997, sells the Severin in three sizes (small, medium, and large) and a "Super Soft" variant for users who want extra give.

The defining feature is the staged geometry. Where most butt plugs are a smooth tapered cone, the Severin has a small nose for easy entry, a slim transitional section, and then a bulb that the user gradually relaxes into. Two distinct staging areas mean a user can hold the plug at the thinner section, breathe, and then progress when ready — exactly the technique educators recommend for anal training. The long neck makes it comfortable to wear during partnered sex without the muscle gripping the widest point. The flared T-bar base is harness-compatible.

User and educator reviews consistently call the Severin one of the better-designed silicone plugs for anal training. Tantus's own customer reviews emphasize the slick glossy finish — silicone takes lubricant easily and cleans off readily — while independent reviewers (the toy has been in production for nearly two decades) treat the medium and small as recommended starting points for intermediate users and the large as an advanced upgrade. The Super Soft variant, made of a softer silicone formulation, is widely recommended for users who find standard plug rigidity uncomfortable for extended wear.

Pricing runs $42–$74 at tantusinc.com, Amazon, SheVibe, and Babeland depending on size. Body is 100% Ultra-Premium platinum-cured silicone — boilable, bleachable, dishwasher-safe, phthalate-free, and made in the USA. Tantus offers a lifetime warranty on manufacturing defects.

Bottom line

The Severin is the right plug if you specifically want anal training geometry rather than a fixed-width bulb. Pick the small to start, medium if you have prior experience with a beginner plug like the b-Vibe Novice, and the large only after the medium is comfortable. The Super Soft variant is worth paying attention to for anyone with sensitivity issues or extended-wear plans. Like every Tantus plug, it does not vibrate, does not need charging, and does not break — buy it once and never replace it.

Sources

Update — 2026-05-02

Initial entry — story first created.