Easy to use: gently squeeze or turn upside down and watch the water flow through the filter; filters up to 2 liters of water per min.

Easy to clean: simply shake or swish to remove debris

Collapsible 1-liter flask packs small to fit into tight spaces

0.1 micron microfilter is tested to protect against harmful organisms, removing protozoa (99.99%) and bacteria (99.9999%) to EPA standards

43mm, wide-mouth opening makes for easy filling from any lake, river, stream or faucet

Cap over drink nozzle keeps dirt out

Tested to 1,000 liters; individual results will depend on water quality

BPA-free