The Stio Environ Jacket and our high choose were neck-and-neck for first place, as the Stio jacket was a tester favorite too. The sleek polyester shell has sealed seams, and it proved to be utterly waterproof when our tester wore itskiing and snowshoeing. One of the highlights of this jacket is that it kept our tester warm during 0-degree temperatures, which completely impressed us given its mild weight. When the weather gets warmer during spring skiing,…