GB Double Perk beaker is Double Stacked!  Two UFO percs filter your hit before gets to you.  More percolation in a longer neck ensures an enjoyable experience.  Watch the filtration in action through clear 7mm glass.  GB Double Perk has a matching color lip wrap and slotted "Green Bear" downstem.  The GB logo is on the front of the tube and the Bear logo is on the base! Comes with a 14mm clear bowl.  6 color options!
 
Height: 16"
Base: 5"
Perk: 2 x UFO
Joint: 14mm