Glycerin or Freeze Bongs are a wonderful invention in the smoking world. These bongs feature glycerin trapped inside a parts of a bong, allowing users to take that glycerin bong or glycerin coil(if detachable), and stick it in the freezer! This provides an ultra cool hit for the next few sessions! This collection showcases our selection of glycerin bongs including freeze coils bongs, full glycerin bongs and more!