Fits all Filter Footwear/Men/Work & Tactical which translates to better stability

which translates to better stability  in the saddle and on the trail

We make boots

It's a great  all-purpose

No other bag  offers this level of stability

Built to move with Rugged Flex stretch technology

Fits all Filter Footwear/Men/Work & Tactical which translates to better stabilityFour piece kit includes an air vent, the filter cartridge, a durable, flexible filter cup, and a funnel for use with narrow neck bottles Can be used with all types of bottles with mouths of nearly any width On certain wide mouth bottles (Kleen Kanteen, Gatorade disposable, and Nalgene) the filter cut also serves as an adaptor for use with the SteriPEN Journey or Classic water sterilizers Dimensions when nested: 3. 5in (8. 8cm) x 3. 7in (9. 5cm) x 2.