- THREE-STAGE PURIFICATION SYSTEM: Our advanced triple filtration system features a sediment prefilter, a 0.01 Micron membrane filter straw, and activated carbon fiber. This setup effectively removes visible solid sediments, eliminates 99.99% of harmful substances, and enhances water odor, providing you with the safest drinking water even in the most challenging environments. - REUSABLE FOOD-GRADE SAFE MATERIAL: Designed for durability, this water filter straw has a guaranteed capacity of 2000 liters (500 gallons). It has been rigorously lab tested by SGS International and meets EPA, FDA, and WHO food-grade standards, ensuring safe drinking water for you and your family. - COMPLETE KIT INCLUDES: This product comes with essential accessories, including a faucet-mounted compatible water purifier straw, a universal PET bottle adapter, a 16-ounce BPA-free reusable pouch, and a 1.3ft (40cm) food-grade silicone pipe, making it versatile for various uses. - COMPACT AND LIGHTWEIGHT: Weighing only 3.5 ounces, this portable water filter is designed for easy transport. Its compact size makes it an ideal addition to your lightweight backpacking gear for outdoor activities such as hiking, camping, scouting, backcountry travel, and emergency preparedness. - PRACTICAL USE SCENARIOS: Whether you are trekking in remote areas, preparing for an outdoor adventure, or ensuring safe drinking water during emergencies, this filter straw provides reliable purification. It is perfect for travelers, adventurers, and anyone who values clean water on the go.