28 mm Filter Kit climbing guidebook newly reinforced with aluminum for

newly reinforced with aluminum for increased rigidity

tint-adjusting technology that adapts to changing light conditions

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

Speed-lock system – fast

28 mm Filter Kit climbing guidebook newly reinforced with aluminum forAccess 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