Buoy C-Ring Onyx by Tantus

Buoy C-Ring Onyx by Tantus is a stretchy silicone cock ring made to improve erection firmness and delay ejaculation through gentle blood flow restriction. The soft silicone construction suits extended wear during sex, and its small 18 mm size delivers a snug, responsive fit for users seeking genuine performance gains.

What you're getting

Buoy C-Ring Onyx by Tantus is a small-sized stretchy silicone cock ring engineered to deliver firmer, longer-lasting erections and delayed ejaculation through gentle constriction. The soft medical-grade silicone stretches easily for application yet grips firmly once in place, maintaining consistent pressure throughout use. Unlike rigid alternatives, this ring prioritises comfort without sacrificing performance—a balance that makes stretchy cock rings a go-to choice for both newcomers and experienced users.

The Buoy's effectiveness lies in its dual mechanism: gentle blood flow restriction keeps your erection firm and sustained, while the snug fit naturally positions your testicles to slow the ejaculatory reflex. The hypoallergenic, phthalate-free silicone resists discolouration and degradation, meaning it handles frequent cleaning and extended wear without losing shape or efficacy. Its compact size intensifies sensation compared to larger rings, giving users who know what they want a genuinely responsive experience.

Main features

• Stretchy application: Soft silicone stretches wide enough for easy, stress-free putting on and removal without requiring tools or force.
• Firmer erections: Gentle constriction around the penis base maintains inward blood flow while slowing outward drainage, keeping you harder throughout your session.
• Ejaculation delay: Testicle positioning naturally slows your climax, extending intimate time significantly for both partners.
• Body-safe materials: Medical-grade silicone is hypoallergenic, nonporous, and phthalate-free, safe for hours of continuous contact with sensitive skin.
• Compact size: The 18 mm diameter delivers heightened sensation and a tighter grip than standard rings, intensifying every touch.

Specifications

• Brand: Tantus.
• Material: Medical-grade hypoallergenic silicone, nonporous and phthalate-free.
• Internal diameter (unstretched): 18 mm.
• Colour: Onyx (deep charcoal black).
• Closure: Slip-on stretchy design with no adjustable components.
• Weight: Lightweight, under 50 grams.
• Box contents: One Buoy C-Ring Onyx, instruction card.

How to size and wear a stretchy cock ring

Start by measuring your penis girth at the base with a soft measuring tape while flaccid, then cross-reference against the ring's unstretched diameter—the Buoy's 18 mm works best for users with a base girth of roughly 28–35 mm when hard. Before first use, wash the ring with warm water and mild soap to remove any manufacturing residue. Apply a small amount of water-based lubricant to the ring and your penis base to ease application; this step is optional but recommended for comfort. Gently stretch the ring open and slide it down slowly over your penis head, then position it at the base where the shaft meets your body.

Once in place, the Buoy should feel snug but never painful—you should be able to fit one finger underneath comfortably. If it feels too tight, remove it immediately and try a larger size; if it slides around, it may be too loose. The ring works best when you remain erect, as flaccidity can cause it to slip. Wear time typically ranges from 20 to 45 minutes during a single session; remove it if you experience numbness, colour change, or discomfort. For comparison, Glans Rings fit differently as they wrap the ridge behind the head rather than the base, so sizing and positioning follow a distinct approach.

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Care and storage

Wash the Buoy with warm water and mild soap immediately after use, or use a dedicated toy cleaner if preferred. Pat dry with a soft, lint-free cloth and store in a cool, dark place away from direct sunlight and heat sources—silicone can degrade if exposed to extreme temperatures. Keep it separate from other silicone toys and away from oils, lotions, and petroleum products, which can break down the material. The ring will last for years if cleaned and stored properly.

Further reading

Understanding how cock rings work and what to expect from different styles helps you make an informed choice. Learn more about the science and application of constriction rings and their performance effects by reading about Magnetic Cock Rings, which explores how different mechanisms compare in real-world use.

What to expect

Most users feel the Buoy's effect within the first minute of wear—your erection becomes noticeably firmer and stays that way. The small 18 mm size delivers a tighter sensation than larger rings, so first-timers sometimes report surprise at how responsive the fit is. Application is straightforward for most, though users with less base girth may find it slightly snug on initial entry; a small amount of lubricant solves this easily. Removal is equally simple—the stretchy silicone relaxes back to its resting diameter without resistance.

Extended wear typically feels comfortable for 20 to 45 minutes during a session, though some users push closer to an hour with breaks. The material does not cause discolouration or irritation for most people, and the nonporous silicone resists bacterial buildup if washed promptly after use. Sensation actually intensifies while wearing it—many users report that every touch feels sharper and more vivid because of the heightened blood engorgement and nerve sensitivity the constriction creates.

Ejaculation delay is real and measurable: most users report an extension of 15 to 30 minutes compared to sessions without the ring, though results vary by individual anatomy and arousal level. This effect comes from both the physical constriction and the psychological confidence boost of knowing you can perform longer. The ring does not prevent ejaculation entirely—it simply makes it take longer to arrive, which translates to extended pleasure for both partners.

Durability is strong if you care for it properly. The medical-grade silicone resists tearing, cracking, and permanent deformation under normal use. Users who clean it promptly and store it away from heat and direct sunlight report the ring lasting for several years without loss of grip or elasticity. The stretchy mechanism does not weaken over time as long as you avoid exposure to extreme temperatures or prolonged sunlight.

How it compares

Why you'll reach for it

Secure your next session with real performance gains. Buoy C-Ring Onyx by Tantus delivers measurable firmer erections and delayed ejaculation through soft, stretchy silicone that feels gentle against your skin while gripping exactly where it counts. Order it from Malechastity.com.au with discreet Australia-wide delivery and start experiencing longer, more intense sessions within minutes of the first use. Shipped Fast From Our Australian Warehouse.