The ExOfficio Men's Air Strip Long Sleeve Shirt is a lightweight shirt for warm weather. Jump on the fishing boat, walk the streets of whatever city you're exploring on vacation or just take a hike. All the while you'll get UPF 30+ sun protection. Side vents for extra air flow and a collar to protect the neck. Roll up the sleeves and secure them with the button tab, tuck your sunglasses into the slot at the left chest pocket and take in the day.