Water pipes & bongs
by Hemper
The Donut Bong is a borosilicate glass water pipe that pairs novelty design with genuine smoking performance. Built from 5mm-thick glass with a diffused downstem, it filters and cools your smoke through water before it reaches your lips — giving you noticeably smoother draws than a dry pipe. Available in 6.5-inch and 10-inch sizes, this is a bong that looks like it belongs on a bakery shelf but hits like proper lab equipment.
| Variant | Height | Best For |
|---|---|---|
| 6.5-inch (HS2392) | Approx. 16.5 cm | Portable sessions, smaller lung capacity, travel-friendly |
| 10-inch (HS2393) | Approx. 25.4 cm | Home use, bigger draws, more water volume for extra cooling |
If you mostly smoke at home and like thick, cooled rips, go for the 10-inch. The extra water chamber volume makes a real difference. The 6.5-inch is the one to grab if you want something compact enough to stash in a drawer or take to a mate's place. Both use the same 5mm glass thickness, so durability is equal — it's really about how much smoke you want per draw.
Every number you need before adding this bong to your cart, laid out plainly.
| Spec | Value |
|---|---|
| Brand | Hemper |
| Material | Borosilicate glass |
| Glass Thickness | 5 mm |
| Downstem Type | Diffused |
| Available Heights | 6.5 inches / 10 inches |
| Design | Donut-themed print |
| SKU (6.5") | HS2392 |
| SKU (10") | HS2393 |
Complete your setup: A donut bong without clean screens and a decent grinder is like a bakery without flour. Pair this with a steel pipe screen set to keep your bowl clean and a metal herb grinder to get a consistent, even burn every session. If you're using the 10-inch version at home, a bong cleaning kit will save you twenty minutes of swearing every week.
We've sold enough cheap novelty bongs over the years to know the difference between a gimmick and a genuinely good piece. Most themed bongs cut corners — thin glass, no percolation, a downstem that's basically a hollow tube. The Donut Bong from Hemper doesn't do that. The 5mm borosilicate glass is the same thickness you'd find on bongs costing twice as much, and it feels solid in your hand. There's a satisfying weight to it — not so heavy it's clumsy, but enough that you know it won't tip over on a coffee table.
The diffused downstem is where the real value sits. Those small slits at the base of the stem break your smoke into dozens of tiny bubbles as it passes through the water. More bubbles means more surface area in contact with water, which means more cooling and more particulate filtration before the smoke hits your throat. The difference between a diffused downstem and a plain open tube is immediately obvious on your first draw — less harshness, more flavour. You actually taste your herbs instead of just tasting heat.
The honest limitation: the donut design does make the base slightly wider than a standard beaker bong of the same height. The 6.5-inch version in particular has a footprint that's a touch broader than you'd expect. It's stable — that's the upside — but if you're looking for something sleek and minimalist, this isn't it. This bong has personality. It's meant to sit out, not hide in a cupboard. If you want something more understated, a classic beaker bong does the job without the bakery vibes.
We've had customers come in specifically asking for the Donut Bong after seeing it online, which tells you something about the design — it sticks in your head. The frosted donut print wraps around the tube and catches the light in a way that photos don't fully capture. In person, the colours are a bit more muted and matte than you might expect from product images, which we actually prefer. It looks more like a piece of art glass than a toy.
The 10-inch version outsells the 6.5-inch by roughly 3 to 1 in our shop. That tracks — most people buying a bong for home use want the bigger chamber. But the smaller version has a loyal following among people who already own a large piece and want something portable for weekends away. Both pull well. Neither feels like a compromise.
Borosilicate glass is non-porous, which means residue sits on the surface rather than soaking in. That's good news — it means a proper clean takes about 5 minutes, not 50.
Clean your bong at least once a week if you're using it daily. The donut design has no hidden crevices or percolator chambers that trap gunk, which makes it easier to maintain than more complex pieces. That's actually one of its underrated strengths — simple internal geometry means a cleaner bong with less effort.
Yes, noticeably. The slits break smoke into smaller bubbles, increasing the surface area that contacts water. You get cooler, smoother draws compared to a plain open downstem. The difference is most obvious on larger hits where heat would otherwise irritate your throat.
5mm is the standard for mid-range to higher-end bongs. It handles normal use, accidental knocks on a table, and regular cleaning without issue. It won't survive a drop onto tile, but no glass bong will. For context, budget bongs typically use 3mm glass — the extra 2mm here is genuinely noticeable in hand.
A bong lets you inhale a larger volume of smoke in a single draw, which can feel more intense than a joint puff. The water filtration also means less throat irritation, so you're more likely to take deeper draws. The herb itself is the same — the delivery method just changes how much you consume per hit.
A female joint is a fitting where the bowl or accessory slides into the opening rather than over it. The Donut Bong uses a standard joint size — check the bowl that comes with it and match any replacement bowls to the same diameter (typically 14.5mm or 18.8mm).
The 10-inch version has enough chamber height to drop in a couple of ice cubes above the waterline for extra cooling. The 6.5-inch version is too compact for ice to sit comfortably without blocking airflow. If ice cooling matters to you, go with the larger size.
After every session. Stale water harbours bacteria and makes your next hit taste like an ashtray. Fresh water takes 10 seconds to swap and keeps every draw clean. There's no good reason to reuse bong water.
The 6.5-inch version is a solid starter piece — manageable size, proper diffusion, thick glass. It's forgiving for new users who are still learning water levels and draw technique. The 10-inch is better if you've used bongs before and want bigger, cooler hits.
Last updated: April 2026
