Tantus Fido Dildo Onyx (Box)

Meet the Tantus Fido Dildo in striking Onyx black, an XL anal toy that redefines what a knot can do. Unlike standard dildos, the Fido uses a pronounced middle knot as a pressure-releasing plug, creating a rush of sensation with every insertion and withdrawal. The ribbed upper shaft targets the inner anal muscle for precise stimulation, making this a go-to for those who crave intense, focused play. Made by Tantus from their signature ultra-premium silicone, this toy is body-safe, phthalate-free, and built to last.

The standout feature of the Tantus Fido Dildo is its thick, rounded middle knot. As you push past it, the knot slips in and acts like a natural plug, releasing a wave of pressure that many users describe as mind-boggling. Pulling out creates a similar rush, turning every thrust into a two-phase sensation. This design rewards slow, deliberate movements and pairs exceptionally well with harness-free solo sessions or strap-on play with a partner.

Above the knot, the upper shaft features pronounced horizontal ribs. These ridges are positioned to engage the inner anal muscle directly, delivering a fluttery, rhythmic sensation during use. The smooth Onyx silicone glides easily with lubricant, and the ribbing holds lube effectively for longer sessions. Whether you are warming up or chasing a full experience, each ridge provides a distinct point of contact.

Tantus is known for their proprietary silicone blend. The Tantus Fido Dildo is non-porous, hypoallergenic, and compatible with any lubricant except silicone-based formulas. It has a firm yet forgiving density that maintains its shape while offering comfortable give. The Onyx colorway is a deep, rich black that resists staining and discoloration, keeping the toy looking new with proper care.

Overall Length	7.5 inches
Insertable Length	6.5 inches
Knot Diameter	2.25 inches
Shaft Diameter (upper)	1.75 inches
Material	100% Tantus silicone
Base	Flared, harness compatible
Color	Onyx black

Apply a generous amount of water-based lubricant to both the toy and your body. Start slowly, letting the knot pop past the sphincter only when fully relaxed. After use, wash with warm water and mild soap or a dedicated toy cleaner. The silicone can be boiled for 5–7 minutes or placed on the top rack of a dishwasher (no soap) for a thorough sanitization. Store separately from other silicone toys to prevent material bonding.

Q: Is the Tantus Fido dildo compatible with strap-on harnesses?

A: Yes, the flared base secures in most standard O-ring harnesses. Ensure your harness ring accommodates a 2.25-inch diameter.

Q: Can I use this toy anally without prior experience with knots?

A: This is an XL toy designed for users comfortable with larger diameters. Gradual warm-up and plenty of lubricant are essential. Listen to your body and never force insertion.

Q: What lubricants work best with the Tantus Fido?

A: Water-based or hybrid lubricants are recommended. Avoid pure silicone lubricants as they may degrade the material over time.

Q: How do I sanitize the Fido for partner sharing?

A: Boil it for 5–7 minutes or use a UV-C sterilizer. The non-porous silicone ensures a thorough clean without retaining bacteria.

Our team spent several sessions with the Tantus Fido Dildo and came away convinced it is one of the most inventive knot toys we have tested. The pressure-release sensation is real and highly addictive, especially when used in a slow, rocking rhythm. The ribbed upper shaft adds a distinct texture that complements the knot rather than overpowering it. While it is certainly not a beginner toy, those who appreciate size and unique internal feedback will find the Fido a worthy addition to their collection. We recommend it for anyone seeking a premium silicone knot experience that goes beyond the standard.

Weight	0.5 kg
Dimensions	20.32 × 15.24 × 10.16 cm