HydraPak Seeker 2L

The HydraPak Seeker 2L is a collapsible water bag made from durable TPU, intended mainly as a collection vessel for squeeze or gravity filtration — the filter itself is not included, only the bag. At 76 g and 2 liters of capacity, it's a light option for carrying or storing a larger volume of water on a multi-day trek where you need to restock from a source along the way. The 42 mm mouth is compatible with Katadyn BeFree and other filters sharing the same thread, so the Seeker works as a universal "pre-filter" reservoir: scoop water from the source, then screw your filter directly onto the opening. The material is BPA-free, food-grade, and leak-proof, and when empty it packs down to almost nothing in your bag. For backpackers who prefer carrying water on demand and filtering on the spot, the Seeker is a practical, lightweight complement to whichever filter you choose separately.