VENTS - Because even the most breathable rainwear can get overwhelmed during strenuous activity, look for showerproof jackets with either mesh ventilation or waterproof jackets with zips under the arms.
VISIBILITY - Rain and bad weather often means low light conditions so staying safe, and visible, is important. Look for reflective materials or hi-viz features on your jacket
HOOD - Some runners love to run with a hood, others find it just gets in the way, but with so many options from detachable, to roll up, to no hood at all you’re sure to find the perfect fit for you. If you’re used to running in windy conditions a roll up hood is a good feature as it won’t get blown about but it’s still there for calmer, but wetter days.
PRICE - When it comes to running jackets, especially waterproof ones, you’re paying for research, development, and performance of the fabric. If it’s an insulated jacket you’re after feathered down isn’t cheap so expect to pay anywhere between £30 and £200 depending on the brand and intended use of your jacket.