Twice the Hit - Thought the designers of this heavy-duty 'Back Leaf' glass bong - and so built this blubber with two deep bowls. The lower round cavity provides a stable base. The ergonomically angled in-take tube also provides the slightly slanted flue and its flared mouth-piece and large thumb size Kick-Hole - make this bong a joy to smoke. The bong is made ?of 5mm think of borosilicate (Pyrex) heat-proof glass and its printed with 'Black Leaf' logo. Two glass, SG 14, down-pipe and bowls, with green roll-stop pimples on the rim are included.