Features: The lightweight and compact hollow fiber membrane system can effectively provide clean and safe water. Chemical-free, they provide at least 1,000 liters of clean and safe drinking water from any source such as creeks and streams. Easily attaches to a drinking bag, standard disposable water bottle with 28mm thread, hydration packs, or use with a silicone straw to drink directly from a water source. Comfortable hat protects against dust and stains. The carabiner is easy to carry and hang. Perfect for outdoor, emergency, camping, hiking, backpacking, etc. Specification: Color: Green/Blue (Optional) Material: ABS without BPAR Water Filter Measure: 128*30mm / 5.0 * 1.2in Filter Capacity: 1000L Flow Rate: 550ml/min Filter Accuracy: 0.01 micron (minimum) Silicone Straw Length: 200mm / 7.9in Weight: Approx. 64.9g / 2.3oz Package List: 1 * Water Filter1 * Carabiner1 * Straw