Keep warm and cosy while feeling light on your feet, the On Running Women's Weather Running Vest is a featherweight layering piece for running in colder weather.

The Women's Weather Vest is made from a combination of impossibly lightweight Japanese stretch fabrics and 100% recycled polyester insulation. This locks in warmth and keeps the elements out. And at just 100 grams you'll hardly know it's there. Once you're warmed up or the temperatures rise, it also packs easily into its own pocket.

Heat-trapping insulation is deployed across the front panel, preventing your body's warmth from escaping. Meanwhile, across the back, a highly breathable panel gives sweat an easy escape route. Whether pushing the pace or taking it steady, this lightweight running vest will regulate your temperature just right as temperatures drop. The regular fit lets you move easily during your run and reflective details shine when your training extends after dark.