Power up trails with ease. This breezy pullover has a ventilated back to keep air moving on steep climbs. When you stop for a snack, cinch the vent closed to keep chills out. Designed for Hiking. Relaxed fit feels roomy and can be worn over larger layers. Size down if you prefer a slimmer fit. Perforated back panel provides ventilation. Cinch the back closed to keep cool air out, Secure kangaroo pocket with a hidden phone sleeve, Hem cinch allows you to choose your fit. Water-Resistant, Ripstop Fabric.