Designated for the Alkaline UP product line, is our top-end premium product, designed to satisfy even the most demanding customers. Crystal is the only glass alkaline water pitcher available on the market right now. Glass creates a chemical barrier and does not react with chemicals in alkaline water providing you with the highest quality of water storage. Made of innovative light and thin borosilicate lab glass. The remaining features which include the lid, funnel and handle are made of the best quality food grade plastics, which are BPA Free.