GRAV is an industry leader in premium designer glass bongs and water pipes. Priding themselves on their innovative designs, high quality glass, and meticulous craftsmanship their vast selection of quality water pipes, hand pipes, one hitters, and smoking accessories have become a fan favourite amongst avid smokers and must have for any smoke shop or dispensary. GRAV operates several product lines of specialty scientific glassware such as Helix, Stax, Upline, and the original Gravitron.