Before the sun gets too high in the sky, tackle a climb or head out to breakfast in the lightweight, packable Aerofohn Long-Sleeve Shirt. Unique AirExchange fabric construction and technology provide advanced air permeability and enhanced drying time, so you stay cool. The moisture-wicking, quick-drying polyester will ensure that an intense trek won't make you uncomfortable. If the sun comes out while you're on the trail, you'll be protected thanks to the UPF 25–rated fabric. A single chest pocket with button closure keeps small items secure and accessible. An updated fit adds versatility.