The RUNNING BAG 331 from WISE is a 6-liter trail vest designed for ultra-distances and long mountain outings. Lightweight and ergonomic, it offers stable support without bounce while guaranteeing quick access to equipment and hydration.

It integrates a patented lateral access system, angled flask pockets facilitating hydration on the move, as well as stretch construction with an aerated mesh back to optimize breathability and thermoregulation. Its intuitive design is designed to reduce strain and remain comfortable even during the longest efforts.