Compact Outdoor Water Filtration The Filterwell Portable Water Filter Straw features a compact cylindrical design for convenient filtration during camping, hiking, travel, and emergency situations. Its visible 0.01-micron hollow-fibre UF membrane supports instant water filtration through the integrated inlet and drinking outlet. The product displays a filtration capacity of up to 4,000 litres / 1,056 gallons, equivalent to approximately 8,000 standard 500ml bottles. Available in dark green and white, its lightweight-looking design is easy to organize inside backpacks, camping kits, and emergency gear. Features: Two Colour Options: Product images display dark green and white variants. 4,000-Litre Capacity: Displayed filtration capacity reaches up to 4,000 litres or 1,056 gallons. Instant Filtration: Integrated design allows water to pass directly through the filter body. Compact Construction: Approximately 13cm long and 3cm wide for portable storage. 0.01-Micron Filtration: Hollow-fibre UF membrane provides fine filtration through the compact internal filter. Specifications: Brand: Filterwell Body Shape: Cylindrical Filtration Rating: 0.01 micron Width: Approximately 3cm / 1.18in Length: Approximately 13cm / 5.12in Available Colours: Dark green and white Product Type: Personal water filter straw Filtration Technology: Hollow-fibre UF membrane Displayed Filtration Capacity: Up to 4,000L / 1,056 gallons Displayed Bottle Equivalent: Approximately 8,000 × 500ml bottles - Flint's