Features:Chemical-Free Purification for Fresh WaterMulti-Layer Filtration + Anti-Bacterial MembraneBPA Free, Activated Carbon Shell ParticlesEasy Refillable and Re-Usable BottleConvenient Fold-Out StrawBuilt-in Compass for NavigationReliable, Long-Life Ideal for Daily UseEliminates Hazardous Metals, Bacteria, AllergensLab Tested to Filter Harmful and Dangerous BacteriaPerfect for Fitness Training, Camping, HikingTechnical Specs:Water Capacity: 650mlFilter Life: Up to 1,500+ LitersWater Flow Rate: 550ml / MinuteTotal Size (L x W x H): 3.2" x 3.2" x 9.4"Sold as: 1Weight: 0.62 lbs.Item Dimensions: 9.45" x 3.15" x 3.15"Item Weight: 0.56lbs