Manufactured using new mpe film which provides the taste free quality of pepolyethylene with the added benefit of extra strength over typical pe films the m in mpe stands for metallocene a special catalyst used in the manufacture of the pe resin it forms a pe that is more consistent and even in structure resulting in greater strength and resiliency making it ideal for reservoirs this added durability allows it to handle hot water it is bpa pvc free of course developed with a new