travel water filter 1. lake, and river water into drinkable water immediately 2.used to Hiking, Fishing, Hunting, Survival,etc travel water filterSize of ceramic membrane's aperture: 0.1 micron Output: Approx. 500ml/min Capacity: 5,000 liters Weight: Approx. 280g Dimensions: φ8.5×21cm Material: PC and ABS plastic, Ceramic, Nano-metal clusters media (NMC) travel water filter