Source Outdoor Widepac 2L Hydration Reservoir with Helix Bite Valve + Sawyer Products Mini Water Filter 2-Liter hydration kit with sawyer mini water filter; reservoir with wide opening for easy filling, cleaning, draining, and ice insertion Drinking tube with round bite valve for easy drinking at any angle; delivers high water flow with Minimal bite pressure High performance sawyer mini water filter fits in the palm of your hand; weighs just 2 Ounces; 0.1 micron absolute Hollow fiber Membrane filter Removes 99.99999% of all bacteria, such as salmonella, cholera, and E.coli; removes 99.9999% of all protozoa, such as Giardia and Cryptosporidium Includes 2-liter Wide Pac reservoir, tube, Helix bite valve, dirt shield, sawyer mini filter, and cleaning plunger