Founded in 2004 in Austin, Texas. Grav designs and manufactures all there glass in house. They pride themselves in offering stylish, functional and affordable glass. Grav also make many other well known brand such as Upline, Nano, Stax, Graviton and the famous Helix Brand. All of these brand are made of high quality German Borosilicate Glass imported then turned into fresh tube to insure the highest quality in the glass. You can’t go wrong with any Grav Labs products.