Breadcrumb Home Store Classifieds For Sale: PurTrek Pole Filter For Sale: PurTrek Pole-Filter By the editors PurTrek Trekking Poles & Water Filtration System. Never used. $100 ($190 new). Contact: mengland21@gmail Tags Hiking Gear Related Gear: Equipment Review: Gregory Zulu 65 Gear: Equipment Review: Aziak Equipment Gear: Apparel Review: Zamberlan 996 Vioz GTX More Store: Classifieds For Sale: Carlisle Oar Store: Classifieds For Sale: XTRATUF Boots Store: Classifieds For Sale: Romp Skis