Prepare to be delighted by smooth, cool hits with this attractive coil bong! The Cold Helix has a narrow, straight tube-style design with a little something extra – the winding-tube neck is infused with liquid glycerin. The tube detaches off the bong, to allow you to put it into the fridge or freezer. Unlike water, glycerin reaches freezing temperatures without freezing solid, making it a fantastic addition to this early-awesome glass piece. When you light up a bowl, smoke is initially diffused through a small cylindrical percolator in the small bottom portion of the chamber. Smoke then rises, passing the decorative glass ball int he main chamber, before getting cooled to perfection as it spirals through the glycerin.