Survival Spring Personal Water Filter (4 pack)Clean water never leave home without it. With this convenient 4 pack, you can have one for each family member, or store them away for later. It's 1,200 of filtered water for your hikes, camping, or when you don't have power and need safe drinking water. The Survival Spring by Alexapure is the pocket sized water filter with the power to remove up to 99% of waterborne protozoa and bacteria. Through an innovative three stage filtration process, the