Shisha Borosilicate Glass clear The Shisha Borosilicate Glass clear is completely made of glass and comes with silicone hose and glass mouthpiece. The base water chamber has 2 hose connectors, one is closed with a purge valve whereby smoke can be released out of the shisha's corpus. The shisha can easily be connected with a second hose. The bowl has a raised funnel with 1 hole which prevents juice from dripping down inside the bowl and into your downstem.