Water pipes & bongs
by Hemper
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The Kraken Bong is a borosilicate glass bong by Hemper that packs an inline percolator into a compact 5.7-inch (14.5 cm) frame — small enough to stash in a backpack, sturdy enough to survive your coffee table. Made from 5 mm thick transparent blue borosilicate glass, it filters and cools your smoke through a built-in inline perc, delivering noticeably smoother draws than any unfiltered pipe of similar size. If you want proper water filtration without dedicating half a shelf to glassware, this is the piece.
| Spec | Value |
|---|---|
| Brand | Hemper |
| Height | 5.7 inches / ~14.5 cm |
| Glass Thickness | 5 mm |
| Glass Type | Borosilicate |
| Colour | Transparent blue |
| Percolator | Inline percolator |
| SKU | HS2612 |
Most bongs under 15 cm are glorified pipes with a water chamber bolted on. They bubble, sure, but there's no real diffusion happening — just noise and splashback. The Kraken Bong is different because Hemper actually fitted an inline percolator inside that compact body. An inline perc sits horizontally in the base of the chamber and forces smoke through multiple slits before it reaches the water. That means more surface contact between smoke and water, which strips out more heat and particulate. The result: a draw that's cooler and less harsh on your throat than you'd expect from something this size.
The 5 mm thick borosilicate glass is the same material used in lab equipment — it handles thermal shock far better than soda-lime glass and won't crack if you rinse it under warm water after a cold night. The transparent blue tint looks sharp without hiding the water level, so you can always see exactly how much water you've got in there. One honest note: at 14.5 cm tall, the chamber volume is limited. You're not going to get the same volume of smoke as a full-size beaker bong. But that's the trade-off for portability, and for solo sessions or quick hits, the Kraken is spot on.
We've had a fair few customers come in looking for a "travel bong" — something that won't shatter the moment it leaves the house. The Kraken's thick glass and low centre of gravity make it one of the sturdier options in that size range. It's not indestructible, obviously — it's still glass — but it feels solid in the hand. There's a reassuring weight to it, about what you'd expect from a decent pint glass.
The Kraken Bong is one of those pieces that surprises people when they pick it up. It looks like a novelty — the sea monster design is playful, no question — but the inline perc performs like a piece twice its price. We've seen customers grab it as a gift or a festival companion and then come back for a second one for home use. The main thing to watch: because the chamber is compact, the water gets dirty faster than in a larger bong. If you're a daily user, get into the habit of changing the water after every session. Fresh water means better filtration, and it keeps the glass from building up residue that's harder to shift later.
Compared to a standard beaker bong of similar height, the Kraken's inline perc gives noticeably smoother hits. A basic 15 cm beaker with a downstem and no perc will work, but the smoke is warmer and harsher. If you want something in the same size category but with a different aesthetic, have a look at the Hemper Hi-Robot Bong (5.9 inches) — slightly taller, different design, similar build quality. But for pure filtration performance at this height, the Kraken's inline perc gives it the edge.
Complete your setup with a proper grinder — evenly ground material makes a real difference in how smoothly the Kraken's inline perc pulls. A set of pipe cleaners or a bottle of bong cleaner will keep that transparent blue glass looking sharp between deep cleans.
Fill it until the water sits about 1-2 cm above the inline percolator slits. You'll see the slits through the transparent blue glass. If water reaches your lips when you tilt it, you've overfilled — pour a bit out and test again.
Yes. At 5 mm thick, borosilicate glass handles daily use and temperature changes well. It's the same material used in laboratory glassware. That said, it's still glass — a drop onto tiles will crack it. The low height (14.5 cm) and thick walls make it sturdier than taller, thinner pieces.
An inline perc is a horizontal tube with slits cut into it, sitting inside the base of the bong. Smoke passes through these slits and breaks into smaller bubbles, increasing the surface area that contacts the water. More contact means more cooling and filtering. You get smoother, less irritating draws.
Pour isopropyl alcohol (90%+) and a tablespoon of coarse salt into the bong. Cover the openings, shake vigorously for 30-60 seconds, then rinse with warm water. The salt acts as an abrasive to scrub residue off the perc slits. Do this weekly for best results.
It's built for solo sessions or sharing between two people. The 14.5 cm chamber doesn't hold massive volumes of smoke, so passing it around a group of four means frequent repacking. For group use, a taller bong with a bigger chamber works better — the Kraken shines as a personal piece.
The Kraken Bong comes set up for dry herbs with a standard bowl. To use it with concentrates, you'd need a compatible banger or nail attachment that fits the joint size. Check the joint diameter before buying an accessory.
A standard beaker bong of similar height typically has a simple downstem with no percolator. The Kraken's inline perc provides noticeably better diffusion and cooler smoke. The trade-off is a slightly more complex shape to clean. For filtration quality at this size, the Kraken wins.
Last updated: April 2026
