Pay in three equal instalments 3 x 
The 28 mm Filter Cap is a versatile water filtration solution for backcountry adventures. It threads directly onto popular 28 mm bottles and flasks such as the HydraPak Stow (500 ml & 1 L) and 1 L SmartWater™, and connects seamlessly to HydraPak reservoirs with the Plug-N-Play™ system.
Its integrated hollow fiber filter cleans up to 1,500 liters of water, removing 99.9999 % of E.coli bacteria and parasitic cysts, with a flow rate over 1 L/min. Included are a cap adapter and a backflush adapter to maintain performance.
Weighing just 47 g, it’s one of the lightest filters available, packing small and fitting easily into any kit. Constructed from PP/POM, EPDM, silicone, and hollow fiber.
Specifications:
Weight: 47 g / 1.6 oz
Dimensions: 34 × 129 mm / 1.3 × 5.1 in
Filter life: ~1500 L
Compatibility: 28 mm thread + Plug-N-Play™
Includes: cap adapter, backflush adapter