I bought this Harrier jacket on a recommendation. Previous other leading brands so called waterproof jackets just don't cut the mustard. One jacket in particular cooks me like a microwave oven, I'll say no more. I hadn't been able to try the jacket out due to glorious weather until 4 miles from the finish of the West Highland Way Race last weekend. Anyone who ran this race after 4am on the Sunday on the Sunday morning will tell the conditions were Biblical.. Thunder, lightning and a tropical rain storm. I have picture to prove that this jacket kept my upper half completely dry. I couldn't believe it. 11/10. It will keep you dry.