Firefly Glass Plug Large review

Glass is heavy enough that you always know exactly where it is, smooth enough to use with just a little lube, and this one is sized for people who are still working out what they like. Reviewers consistently call it beautiful, and they mean it — the rose-shaped base is the sort of thing you leave out rather than hide.

The weight is the first thing you notice. Glass sits differently to silicone — there is a presence to it that reviewers describe as grounding, and the heft means it stays exactly where you put it. One person reported wearing it for hours without it shifting at all.

The surface is completely smooth, which means you need less lube than you would with a textured toy, and cleanup is as simple as it gets. Reviewers say it feels expensive in the hand, and the rose detail on the base is detailed enough that several people mentioned it specifically as a reason they bought it.

The size works well for people who are early in their exploration. Multiple reviewers called it a great starter size, and one couple reported using it on each other as a first-step item. The taper is gentle enough that insertion is straightforward, and the loop at the base gives you something to hold onto.

Performance is where it earns its score. One reviewer reported effortless orgasms with just a few thrusts, and another said it was one of their favourites for deep penetration. The glass conducts temperature, so you can warm it or cool it before use — though no one in the review set mentioned doing that, they were happy with it at room temperature.

The one consistent criticism is that the rose shape, while beautiful, can dig in if you are sitting down for any length of time. One person said it felt amazing but became uncomfortable after a while when sitting. If you are planning to wear it out, that is worth knowing.

It suits people who want something that feels substantial, looks good, and does not ask much of you to get results — particularly if you are still working out what size and shape you prefer.

This is for people who are early in their anal play and want something that will not intimidate them. The size is manageable, the taper is forgiving, and reviewers who identified as beginners were consistently happy with it.

It also suits anyone who cares about aesthetics. The rose base is detailed enough that several people mentioned it as a reason they bought it, and one reviewer said it was cute enough to justify the cost. If you want something you can leave out rather than hide, this is that.

It is less suitable if you plan to wear it while sitting for long periods. The rose shape, while beautiful, can become uncomfortable when you are seated — one reviewer said it felt amazing but dug in after a while. If you want something for extended wear, look for a plug with a flatter base.

And if you already know you prefer larger toys, this will feel too small. The "Large" in the name is relative to the rest of the Firefly range, not to plugs generally. People who are past the beginner stage should look at something with more girth.

Glass is also not for everyone. It is unforgiving in a way that silicone is not — there is no give to it, and if you are not ready for the size, you will know immediately. But for people who want that firmness and weight, it is exactly the point.

Borosilicate glass is non-porous, which means you can clean it properly and it will last for years. Soap and hot water is all it needs for day-to-day use, and you can boil it or run it through the dishwasher if you want to sterilise it between uses or between people.

The smooth surface means there is nowhere for bacteria to hide, and it does not degrade the way porous materials do. You can use any lube you like with it — silicone, water-based, oil-based, all fine — and it will not react.

Store it somewhere it will not knock against other toys or hard surfaces. Glass is durable, but it can chip if it takes a hard knock, and a chipped toy is not safe to use. A padded pouch or a dedicated drawer is enough.

The rose detail on the base is intricate, so give it a proper rinse after cleaning to make sure nothing is left in the crevices. It is not difficult, just worth doing properly.

This sits in the butt plug category, where it scores 90 — well above the category average of 78. It is one of the higher-rated plugs we track, and the review count is substantial enough to trust that score.

If you want to see where it sits against the rest of the category, the full ranking is on the best butt plugs page. That list includes plugs at every price point and material, so you can compare it to silicone and metal options as well.

The question most people ask at this point is whether the score justifies the price, and whether there is a better option for the same money.

A beautiful, beginner-friendly plug that does exactly what it is supposed to do. The glass is smooth, heavy, and non-porous, and reviewers consistently report that it feels expensive and performs well. The rose base is detailed enough that several people mentioned it as a reason they bought it.

The one consistent criticism is that the rose shape can dig in if you are sitting down for long periods, so if you want something for extended wear, look for a plug with a flatter base.

Otherwise, this is a solid choice for people who are early in their exploration and want something that looks good, cleans easily, and will last.

It is priced at $39.95, which sits in the mid-range for glass plugs of this size. You can find it at most major retailers, and it is stocked by Coy in New Zealand.

This review is based on 184 reviews across 4 retailers, averaging 4.8 stars. The Coyscore is 90, which puts it in the top tier of plugs we track. The review count is high enough to trust the score, and the sentiment is consistently positive across all sources.

The method for calculating the Coyscore is on the methodology page, and the full evidence count is published on every review.

Material: Borosilicate glass (supplier spec)
Non-porous: Yes (derived from supplier spec)
Weight: 0.17 kg
Insertable length: Not stated (size "Large" is not a length)
Maximum diameter: Not stated
Flared base: Not stated (safety-critical, so we do not infer it from the category)
Taper: Not stated

The Snug Report is published by the team behind Coy, a New Zealand retailer that stocks many of the products reviewed here. We say so on every page. Our scores come from aggregated public reviews, not from us — the method is on the methodology page and the evidence count is on every review.