Features:*High Quality Material: This product is made of high-quality material, durable and wear-resistant, not easy to break, safe to use, and provides you with a reliable sources of pure drinking water anytime and anywhere.*Portable: The water filter straw is small and compact, lightweight and easy to carry in your bag.*4-level filtration: 1. High-performance medical-grade hollow fiber ultrafiltration membranes, 2. Medical-grade PP cotton, 3. Coconut-shell activated carbon, 4. Medical-grade PP cotton, which can instantly turn nearby water sources into safe drinking water.*Easy to use: Get close to a stream or lake and use it to drink directly from the sources, or fill a water bottle and insert the filter to start sipping.*Wide Application: The filter straw is the perfect aid in emergency situations such as camping, hiking, mountain climbing, backpacking, biking, boating, car riding, outdoor travel and wilderness adventures.Notice:1.Actual color may be slightly different from the image due to different light effect2.Please allow 1-3cm deviation due to manual measurementMaterial: ABSSize: 175*30mm