
What is borosilicate glass and why the best bongs are made from it.
Each product category uses borosilicate glass differently
Pro Tip Choose thick borosilicate (9mm+) for daily use — it is practically indestructible.
Borosilicate glass contains boron oxide, giving it exceptional thermal resistance and chemical inertness.

Laboratory-grade glass (type 3.3) used in surgery and science. Withstands extreme temperatures up to 500°C.
A coefficient of expansion of 3.3 means minimal deformation when heated.