CNOC Vecto 2L

The CNOC Vecto is a 2-litre collapsible water bag made from TPU, weighing 76 g — light enough that carrying it empty costs almost nothing, and it packs flat when not in use, unlike a rigid bottle. It has two openings: a wide slider at one end for fast scooping from streams or puddles, and a 28 mm threaded mouth at the other for attaching a filter or standard bottle cap. Being food-grade certified and BPA/BPS free, and explicitly filtration-compatible, it is built to pair directly with squeeze or gravity filters via the threaded end, letting you fill from a shallow source through the wide opening and then filter without transferring water between containers. TPU is tougher against punctures than typical ultralight soft flasks but still less durable than a hard bottle, so it is not the choice for bushwhacking through thorny scrub where a bottle in an outside pocket would survive better.