Features 1. Safe material: The portable Personal Water Filtration Survival is made of BPA-free food-grade ABS solid plastic,which can ensure the safety of drinking water and reduce environmental pollution. 2. High-efficiency water purification: The outdoor water filter straw can filter up to 330 gallons of water, and the maximum flow rate is 550ml/min. You only need to put the filter straw into the water source (stream, lake or bottle filled with water), you can easily and quickly absorb safe drinking water. 3. Portability: The Ultralight survival water filter is lightweight and measures 7.08 x 1.18 inches. The strap and compact and lightweight design are perfect for carrying around. 4. Effective water purification: The straw water purifier adopts a four-stage filtration system to achieve a filtering effect of 0.01 microns, which can effectively remove harmful substances and solids sediment etc. 5. Wide applicability: The Emergency Water Purifying Device is an indispensable tool for hiking, hunting, camping, mountain climbing, hiking, cycling, boating, riding, backpacking, domestic and foreign travel, field exploration or emergency situations. You can take it outdoors and drink safe drinking water easily. Specification Material: ABS, PE Color: Blue, Green Size: 18 x 3 cm Weight: 85 g Purified water flow: 550 ml/min Water purification capacity: 1500 L Package Include: 1 Water Filter Straw