The two dearest cock rings won't say what size they fit

Four print it, two don't

TRIOOO is the cheapest ring here at £22.42 and the most specific of the six: 28, 34 and 40mm, three separate inner diameters, sold as a set of three sizes. TYLER prints 29mm. TAMMY prints an inner ring of 28mm and an outer ring of 48mm, which is the pair of numbers you need to understand what the thing does. BENEDICT prints 42mm, but not in its specification table.

ATOM at £49.95 and ATOM PLUS at £89.99 print nothing. Their pages give a bounding box, 80 × 30 × 60mm, and a weight marked "(with packaging)". A box dimension is not a fit dimension, and a weight that includes cardboard is not the weight of the thing you wear.

So the two dearest rings in the library are the two that say least about fit, and the cheapest says most.

The same ring, two different numbers

Svakom makes four of the six, and two of those four contradict themselves.

TYLER's specification table reads "Inner Diameter: 29mm". Further down the same page there is a comparison grid covering the whole family, and in the row labelled RING SIZE (INNER CIRCLE) TYLER reads 35mm. Two numbers, six millimetres apart, on one page, with no date on either.

TAMMY has the milder version of the same problem. Its specification table reads "Outer Ring: 48mm; Inner Ring: 28mm". The grid prints a cross for inner circle, which in Svakom's convention means the figure is not published.

The grid is older than the specification tables. That is an inference from the content, not something either page states, so treat it as the likelier explanation rather than a fact. What is a fact is that the two surfaces disagree and neither carries a date.

What 14mm means on a body

The spread across the four rings that publish a diameter runs from 28mm to 42mm. Converted to the circumference that actually goes round you, that is 88mm at one end and 132mm at the other. Those are not two sizes of the same object. They are two different products that happen to share a category name.

The TYLER discrepancy is smaller and still not small. 29mm and 35mm are 91mm and 110mm of circumference. Nineteen millimetres is roughly the difference between a band you forget about and one that leaves a mark.

Rings in this category are mostly stretchy silicone, so the printed diameter is a starting point rather than a lock. That cuts both ways. A band 4mm too small will stretch on, and it will also be the one you take off after ten minutes.

The reviews do not measure fit

All six rings now publish a star split, and the pattern in it is the opposite of what you would hope for. Four report zero at two stars or below, and three of those four rest on samples too small to mean anything: TRIOOO on 13 reviews, ATOM on 8, ATOM PLUS on 30. The one zero with weight behind it is TYLER, 186 reviews and nothing below three stars.

The two rings that do report failures are the next two by review count. BENEDICT sits at 1.8% across 164 reviews and TAMMY at 2.5% across 163.

Read that carefully before you conclude that TAMMY is the weaker ring. A review can only report a fit problem if the buyer's body was the wrong shape for the ring, and the buyer who got it wrong is exactly the one who writes the review. TAMMY's page carries a review that calls the inner ring snug without being painful, which is a fit verdict from someone it happened to fit. The 2.5% is the other side of the same coin.

None of these figures will tell you whether a ring will fit you. They tell you how often buyers reported a problem, and in this category the most common problem is a problem you cannot inherit from them.

If the page won't tell you

Measure the circumference of the base with a strip of paper, snug rather than tight, and keep the strip. If you are between two sizes on a silicone ring, take the smaller one, because silicone gives and a loose ring does not do the job it is sold for. If the ring is rigid, do not buy it without a diameter, whatever the reviews say.

Buy from somewhere with a working returns path. Opened items in this category are usually excluded from the standard right to cancel, so the shop's own policy is what you have, and that is worth reading before you order rather than after. I went through what "opened" means in a separate piece.

Who should not buy one

If you need a specific size and you are not going to measure, none of these six is a good buy. ATOM and ATOM PLUS are the weakest of the six on paper for a different reason: £49.95 and £89.99, no inner diameter, no device weight, and the only dimensions given are the box.

If you want to try a ring without spending much, TRIOOO at £22.42 gives you three diameters for less than half the price of the next one up. That is the one purchase in this category where the cheap option is also the better-informed one.

Where these numbers come from

The diameters and dimensions are read from each brand's own product page on 27 and 28 October 2026: the specification table on Svakom's TYLER, TAMMY, TRIOOO and BENEDICT pages, the comparison grid lower down those same pages, and the size and dimensions block on Hot Octopuss's ATOM and ATOM PLUS pages. The ring diameters and the two-star shares are listed on each product page in the library, with the review count next to them. Prices are the brand's own, converted to pounds at the rate shown on the product page, and they move. Check the page before you buy.