The BeFree Tactical is a lightweight "just in case" solution - but still full of Katadyn quality. The bottle flattens down as you drink from it, preventing it from sloshing. - Hollow fiber filtering - 0.1 microne filter size - Filters bacteria, spores and seidment - Filtering speed approx. 2 liters / minute - Filter life up to 1000 liters depending on quality of water PVC-free. BPA-free. *Note!* A water filter or purifier tablets cannot remove the toxins created by algae bloom, and therefore do not make water containing said toxins safe to drink.