Perfect for a long ridgeline hike or a relaxing afternoon boat cruise, the lightweight Expedition Stretch 3/4 Sleeve shirt has numerous performance benefits that will keep you focused on fun. It effortlessly wicks away moisture with its patented moisture control system, stretches to move with you, and resists wrinkles and the sun's harmful rays with UPF 50+ sun protection. Expedition Stretch. Natural fit. UPF 40+. Rotated shoulder seams. Roll-up sleeve tabs. Mesh-lined yoke. Tucks at back yoke. Covered snap placket. Shirt tail hem. Material: 100% Polyester.