Sagan XStream Straw & AquaDrum Filters. Tested and certified by independent water laboratories to meet or exceed EPA water quality standards and establish the water filter's "End of Life" at 250 gallons. Specifications for Sagan XStream Straw & AquaDrum Filter: Manufacturer: Sagan Age Group: Adults Package Contents: Sagan XStream Straw & AquaDrum Filter Sagan 57093: XStream Straw & AquaDrum Filters