Katadyn Pre-Filter for Steripen headwear With a front profile of

With a front profile of only 10mm and weighing only 78 g

Multi pocket design

Specialized lug tread is engineered to provide reliable traction on metal surfaces

The Crew Midlayer Jacket just got better

and our decorative 'W' stitching

Katadyn Pre-Filter for Steripen headwear With a front profile ofWhen in use, pour water through the durable 40x40 micron screen filter cartridge to fill the bottle. Then you're ready to purify the water with a Steripen UV water purifier. Remove the filter cartridge from the Pre Filter, insert the filter into the center of the filter, flip the bottle, and agitate the water until the Steripen indicates the treatment is complete. Style: SP PF