28 mm Filter Kit climbing guidebook you know you can rely

you know you can rely on premium

Featuring tips from famous climbers such as Tommy Caldwell and Alex Honnold

newly reinforced with aluminum for increased rigidity

A heavy-duty

tint-adjusting technology that adapts to changing light conditions

28 mm Filter Kit climbing guidebook you know you can relyAccess potable water anywhere. Our unique and versatile 28MM inline filter threads directly onto popular 28MM opening bottles and flasks and is equally easy to install in any of our reservoirs and caps with a Plug N Play connect system. This versatile connectivity makes our filter a great backcountry water treatment solution whether you are squeezing your water from a Stow into another bottle, gravity filtering your water out of a Seeker or Pioneer