LIT Silicone 12 Inch Dual Perc Clear Silicone Water Pipe with Glass Adapter & Bowl. This 12" Clear Base Water Pipe from LIT Silicone offers top-of-the-line durability in an assortment of colours. Each one is made of food safe, BPA-free silicone and features a dual perc for improved filtration. Glass bowl and downstem included! Don't worry about dropping and breaking your bong anymore! Silicone is also heat resistant and non-stick which makes cleaning a breeze.