This bong features a freezable glycerine coil that provides excellent cooling. It cools your intakes similarly to ice, but without the melting issues.
Due to its high freezing point and gel-like consistency when frozen, it is an ideal replacement for ice in bongs as it stays frozen much longer. Glycerine freezes quickly and is non-toxic.
NECK / TUBE DIAMETER
The coil is not a separate removable part and the entire bong must be placed in freezer (carefully).
When cleaning the coil, make sure you get your regular bong cleaning liquid into the entire coil and let it sit for a while, a gentle shake from time to time helps. Rinse with cold water once clean.