Let gravity do the filtering with Katadyn's BeFree 3.0L Water Filtration System.  You can fill you hydration bladder with the included quick release hose kit.

The 0. 1 micron water filter removes harmful organisms like bacteria 99. 9999% and protozoa like giardia & Cryptosporidium 99. 9%, surpassing EPA standards.

Easy to use:  fill and hang the ultra durable HydraPak 3.0L reservoir using the integrated Bail Handle & Carry Loop.  The output is up to 2L/min. with a total capacity of 1,000L, depending on the water quality.

Easy to clean:  simply shake or swish the EZ-Clean Membrane to remove debris.

Height:  Approx 19.4 inches

Width:  Approx 9.1 inches

Depth:  Approx 3 inches

Weight:  Approx 6.8 ounces (empty)