One of The North Face's most popular aerobic jackets, the Apex Elixir Jacket is a lightweight softshell that provides wind and water resistance, while allowing for maximum breathability and comfort. The Apex Aerobic fabric designed by The North Face is surprisingly stretchy so it will move and stretch will your every movement. As part of The North Face's Summit Series, the Apex Elixir has an alpine fit so there isn't a lot of extra fabric getting in the way. There are two alpine zippered pockets that will remain accessible even with a pack on and there is a hem cinch cord so that you can snug the fit.