Ideal for walkers backpackers urban travellers and more this water to go filtered water bottle is a treat for life outdoors offering an incredible 999 water filtration that lasts 3 months per filter filter included the bottle is made to last and light to carry its proven to eliminate most water risks making it safer to drink from fresh water sources features instant filtration water bottle for fresh water on the move 750ml capacity replace filter every 3 months or 200 litres used