Ready for the coolest hits of your life? Enter Freeze Pipe. Each piece features one or more glycerin chambers, which you can pre-freeze in your standard freezer. The glycerin inside is a non-toxic gel-like substance often found in food and sweeteners that freezes faster than water--and stays frozen longer, too. Once you're ready to smoke, pull the chamber out, add it to your pipe (make sure to secure with clips if needed!), and light up and enjoy.