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The Croia Glass 15-inch scientific glass bong blends advanced filtration engineering with a striking mechanical aesthetic. Built from premium borosilicate glass, this design combines a multi-arm tree percolator, an internal spiral cooling coil, and a recycler-inspired chamber layout that guides smoke through multiple cooling stages. The result is a visually dynamic bong that delivers smoother hits, cooler airflow, and an unmistakable futuristic appearance.
At the base of the chamber, a precision tree percolator begins the filtration process. Multiple diffusion arms split the smoke stream into smaller bubbles, dramatically increasing the surface area between smoke and water. This process improves filtration while helping cool the smoke before it moves into the upper chamber.
One of the most distinctive features of this Croia Glass bong is the internal spiral cooling coil. This structure is not only visually striking — it also improves thermal performance. As smoke travels through the spiral path, centrifugal force pushes the airflow toward the outer glass walls, increasing heat transfer and allowing the smoke to cool more efficiently.
This engineering approach transforms the spiral structure from a purely aesthetic element into a functional cooling system.
The upper chamber features a wide funnel-style structure that gives the piece a recycler-inspired appearance. While it functions as a traditional bong chamber, the shape helps guide airflow smoothly upward while controlling splash during strong pulls.
This design gives the bong a futuristic, mechanical appearance that stands out among traditional straight-tube pieces.
Like all Croia Glass pieces, this bong is crafted from high-quality borosilicate glass. This laboratory-grade material is widely used in scientific equipment because it offers excellent strength and resistance to sudden temperature changes.
For customers searching for a thick glass scientific bong, this construction offers durability while maintaining exceptional transparency.
Despite its multiple filtration stages, the airflow path is carefully balanced to maintain comfortable draw resistance. Smoke moves progressively through the tree percolator, spiral cooling coil, and upper chamber without creating excessive drag.
| Height | 15 inch |
| Weight | 792 g |
| Material | Borosilicate Glass |
| Percolator | Multi-arm Tree Perc |
| Cooling System | Internal Spiral Cooling Coil |
| Joint Size | 14mm Female |
| Included Accessory | 14mm Male Bowl |
Filtration & Airflow Demonstration
Insert blow-through or water filtration demonstration video here.
A tree percolator splits smoke into multiple smaller bubbles through several diffusion arms. This increases water filtration and produces smoother, cooler hits.
The spiral coil extends the smoke path and uses centrifugal airflow movement to push smoke against the glass surface, increasing heat transfer and improving cooling performance.
This piece has a recycler-inspired chamber shape that helps guide airflow smoothly, but it functions as a traditional bong with advanced cooling and diffusion features.
Borosilicate glass offers excellent durability and resistance to rapid temperature changes, making it the preferred material for high-quality scientific glass smoking devices.
Pair this bong with our Croia Glass Ash Catcher for even cleaner filtration and an upgraded setup.
You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).
When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.
Croia Glass
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