Division Cascade Series vest integrate a unique quilting process to add a full panel of Ergolite foam in the front and back. The new Flowlite material has been added inside and out, dramatically cutting the weight of the vest. Try one on, and you won't believe you're wearing a vest. The Wake Fleece material is used exclusively in the Division and Balance Series. These vests are comfortable where you need it the most NWOT Side zipper, back length 23”, armpit to armpit 17” Medium chest size 36”-38”