Fill, Hang and Enjoy! Base Camp Pro 10L uses gravity to provide fresh, safe water you can trust. The new 0.2 Ultra Flow filter technology delivers up to 2L/min. output of filtered water, which is 2x the speed of other gravity filters. The integrated Sediment Trap eliminates backflushing hassles by trapping dirt before it enters the filter, and the Filter Protector Screen allows for field-cleanability.