Hi Si Glass was founded in 2008 and is family owned and operated. Based out of North California they have over 40 years of experience in glass blowing. They specialized in scientific glass and developing pieces that decrease the health risks associated with high temperature smoke inhalation. For this they have created the revolutionary Geyser Perc to allow maximum cooling, function, durability and draw. They create everything from amazing functional pieces to their popular tubes, bubblers and accessories. They truly have clean scientific aesthetics, optimized function and max diffusion without drag, great heft and durability. Hi Si Glass has definitely earned their title as one of the top scientific glass blowers.