Product details:

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.