The KUHL Men's The One Jacket is a lightweight and windproof jacket that provides an ideal amount of insulation and warmth when on the move in the outdoors. The One Jacket features targeted stretch for better freedom of movement, reflective trim for increased visibility in low light, and an adjustable drawcord hem to help create a custom fit. Designed to perform on a body in motion, The One is an ideal jacket for trekking, running, and high intensity hikes.