The Puffco Proxy BUB | Fully Compatible with the Original Proxy and New Proxy Pipe KitThe Puffco Proxy BUB: Fully Compatible with the Original Proxy and New Proxy Pipe Kit. Its a bubbler. The Proxy Bub is a no nonsense water Piece that delivers smoother, cooler hits. Made with hand blown borosilicate glass, the Bub's sweeping, streamlined design fits comfortably in your hand and stands stable on any flat surface. The Proxy Bub adds water function to the Proxy experience. The percolated water filtration provides a smoother and cooler