The Women's Reflexa Jacket uses Outdoor Research's hem-to-pit TorsoFlo venting system to help you stay cool no matter how strenuous the hiking gets. Though it weights only 12.7oz, the fully featured Reflexa Jacket comes with a hood which folds into the collar and an internal pocket that doubles as a stuff sack when your shell needs to ride in your pack. Outdoor Research understands how important it is to stay dry in the backcountry, so they used fully seam taped Pertex Shield fabric to protect you from the rain.