Bought these to try but never did as I tend to stick to using my Sawyer water filter, or that type of filter. These are a budget alternative to the katadyn befree filter flasks.
Hydrapak Seeker+ 3 ltr Filter Soft Bottle and water filter
Katadyn BeFree Activated Carbon Water Filter - 0.5L / 1L - Soft Bottle
Filter Water Bottle with water filter Straw Outdoor Water Purifier and Water Fil
Camping Gravitys Water Bag With Water Filter And Hose Folding Water Filter Straw
Gravity Water Filter Straw Portable Drinking Water Filter,4-Stage,3L Water Bag
Water Filter Camping, Personal Water Filter Straw with Gravity Water Bag, 0.01
