A Four-Piece Set Of Water Filter Straws, A Portable Personal Water Filtration SGS Certified with Test Report NBF23-0012700-03. Each filter meets strict quality standards and undergoes regular performance testing, ensuring reliable performance when needed. Protects against over 99.9999% of harmful substances and removes the smallest microplastics found in the environment, down to 0.1 micron. Provide up to 1,300 gallons of clean drinking water per unit with proper use and maintenance, ensuring a sufficient supply for an individual for over 5 years. Measuring 1.6" in diameter and 8.2" in length, and weighing only 3.5 ounces, it seamlessly fits any standard 28mm threaded water bottle and can also be attached to standard gravity hoses. With a powerful suction boasting a maximum flow rate of 600ml/min, effortlessly and quickly obtain clean water. No expiration worries with unlimited shelf life, always ready in your emergency go-bag. An ideal gift for outdoor enthusiasts and adventurers, perfect for hiking, camping, backpacking, travel, backup hydration, emergency preparedness, or on-the-go needs.