MSR Sweetwater Micro Filtration System

The MSR Sweetwater water filter features a lever action handle folds flat. Cleanable with simple brushing in less than a minute. No parts to lose or maintain. OK to freeze and impact safe. Unique safety End of Use Indicator, visible after about 100 brushings, tells you to change filter. Pressure Relief System prevents forcing bacteria through filter. Includes: Carry Bag, 75 micron Prefilter, Universal Water Bottle Adapter. Eliminates: 99.9999 percent bacteria and protozoan parasites. Cleaning brush included. Dimensions: 2 in 5 cm x 7.5 in 19 cm Wt. 11 oz 320 g Activated carbon Silica Depth filter .2 micron 75 micron pre filter 99.999 bacteria and protozoa