Clean Water Anywhere. No Chemicals. No Compromise. In a survival situation, water is your first priority. The Miniwell L630 Water Filter Straw gives you up to 528 gallons of clean, drinkable water from natural freshwater sources — using nothing but a 0.1-micron ultrafiltration membrane that fits in the palm of your hand. Drink directly from a stream, attach it to a standard water bottle, or build a gravity filtration system on the fly. Key Features 528-Gallon Filtration Capacity — Filters up to 528 gallons (2,000 liters) of natural freshwater without chemicals or replacement cartridges. 0.1-Micron UF Membrane — Medical-grade ultrafiltration removes 99.9999% of waterborne bacteria and 99.9% of parasites including Giardia and Cryptosporidium. Multiple Use Modes — Drink directly like a straw, attach to a standard 28mm bottle, connect to a plastic bag for gravity filtration, or use with a bucket for group supply. Easy Backflushing — 28mm threads on both ends let you screw on a standard soda bottle to backwash and extend filter life. No syringe needed. Ultralight at ~1.4 oz — Measures just 1.57" × 5.35". Fits in a pocket, pack, or 72-hour kit without adding bulk. FDA Approved Materials — ABS, medical-grade UF membrane, and silicone construction. TUV and SGS tested. 5-Year Shelf Life — 3 years after initial wetting. Store dry in a cool location between uses. Specifications Model: Miniwell L630 Material: ABS + Medical-Grade UF Membrane + Silicone Filtration Pore Size: 0.1 Micron Filtration Capacity: ~528 gallons (2,000 liters) Flow Rate: ~0.16 gal/min (0.6 L/min) Size: 1.57" × 5.35" Weight: ~1.4 oz Shelf Life: 5 years dry / 3 years after wetting Colors: DIY Brown, DIY Gray Ideal For Bug-out bags, 72-hour kits, hiking, camping, fishing, emergency flood response, remote travel, and military use. One of the highest value-per-ounce items you can carry in any survival kit. Package Includes: 1× Miniwell L630 Water Filter Straw