1500 Litres of Clean Water. Side Flush. Back Flush. Built to Last.The Outdoor Water Purification Filter Straw delivers reliable 0.1 micron filtration from any freshwater source, with a 1500-litre filter capacity that handles extended outdoor use and emergency preparedness alike. The dual-flush system — side flush and back flush — keeps the filter clean and performing at its , extending its lifespan even further.Made from ABS+TPR+silicone at just 120g and 14 × 3.7cm, it's compact enough to carry in any pocket, pack, or emergency kit. No chemicals, no batteries — just insert and drink.Specifications Feature Details Filtration Accuracy 0.1 micron Filter Capacity 1500 Litres Material ABS + TPR + silicone Dimensions 14 × 3.7 cm Weight 120g Flush System Side flush + back flush Why Choose This Filter Straw? Dual Flush System: Side flush and back flush keep the filter clean and extend its lifespan. 1500L Capacity: Long-lasting filter life for extended outdoor use or emergency preparedness. 0.1 Micron Filtration: Removes bacteria, protozoa, and particulates from freshwater sources. Ultralight at 120g: Compact and lightweight for any pack or emergency kit. No Chemicals or Batteries: Works anywhere, anytime, with zero setup. I For Hikers and backpackers on remote trails Campers needing reliable water purification Emergency preparedness and survival kits Travel to areas with uncertain water quality In the Box 1 × Outdoor Water Purification Filter Straw 1 × Manual