Arcteryx Women's Sentinel LT Jacket The Sentinel LT Jacket is a highly versatile big mountain jacket built for weather protection in a progressive design. It is equipped with a full set of features specific to freeride touring: helmet compatible StormHood(TM), RS(TM) zipper sliders on chest and hand pockets and an RFID pocket, pack compatible WaterTight(TM) pit zippers for venting, integrated powder skirt,with Slide 'n Loc(TM) attachments for compatible pants, an internal laminated pocket and an internal mesh dump pocket. N80p 3L GORE-TEX fabric with GORE C-KNIT(TM) backer technology is quiet and comfortable movement through wet and winter weather. The longer length gives extra protection from the elements on deep storm days. 565g