Soft Flask with Filtration 400ml

Light, compact, and fuss-free—ideal for quick fills on the move. Membrane Solutions says: Take the hassle out of filtering water. The Soft Flask with Filtraiton 400ml allows you to store and filter water with ease! Our Verdict I took the Membrane Solutions Soft Flask with ...Light, compact, and fuss-free—ideal for quick fills on the move.

Membrane Solutions says: Take the hassle out of filtering water. The Soft Flask with Filtraiton 400ml allows you to store and filter water with ease! Our Verdict I took the Membrane Solutions Soft Flask with Filtration (0.4L) out for a trip to the Lakes, and it performed admirably. At just 69g, it's lightweight, and the soft-sided design means it packs down easily once empty.

The flow rate was better than expected—no hand-cramping squeezes—and the water tasted clean every time. The filter deals with bacteria, viruses, and microplastics, and while the 100-litre lifespan isn’t massive, it’s spot on for shorter multi-day trips or as a backup system. What I liked most was the simplicity—no backflushing or extra faff, just fill and drink.