Feature: 0.01 Micron filter straw. Remove visible solid sediments, reduce harmful substances and improve the odor, ensuring the safest water in the worst environments. Effectively filters water up to 1000 liters, the outdoor water filter purifies water of pond, river, streams to offer clean drinking water. Water purification straw increased pressure function, it can be used to speed up the filtration. Detachable for cleaning. The portable water purification straw is lightweight, 18.5cm long and 3cm in diameter for portability. You can easily carry it around your neck with the lanyard. Easy to use, open the cap of our water purifier straw, get down close to the streams or lakes. And use it to drink water straightly from the source, water will be filtered before arrive your mouth. Or fill your bottle some water and fix the extension straw to the filter, finally enjoy your drinking. The emergency water filter is great for camping, hiking, travel, long walks, backpacking and emergencies. To ensure your family, friends and you are well equipped for the planned trip or outdoor adventure. It is also the perfect gift for adventurous people. Note: The purification straw is NOT workable for seawater/Industrial effluent. Specification: Material: ABS Plastic, Fiber Filter Film Color: White Size(LxD): About 18.5x3cm Purification Capacity: About 1000L Filter Accuracy: 0.01 micron Package includes: 1pc x Water Filter Straw Note: 1. Due to the light and screen difference, the item39;s color may be slightly different from the pictures. 2. Please allow 1-2 cm differences due to manual measurement.