Nike Women's Shifter Jacket (£48.00)
Kerry says: At £60 this was already good value but the on-sale price makes this pretty much fall into the category of 'can't afford not to'. Nike's Stormfit fabric ensures that in all but the most biblical of weather you'll somehow manage to remain snug and dry while not succumbing to the red-faced state of tackiness that less breathable jackets bring about. It's semi-fitted so it'll hug your best bits and cunningly hide others; the sleeves are removable in case you want to turn it into a gilet for use in unpredictable spring weather; plus there are large extendable front pockets, and there is also reflective detailing throughout. All this and eco-friendly creds too: it's made from recycled polyester, so you can feel good about yourself in more ways than one while wearing it.
Buy yours now from the Runner's World Store.