The Patagonia Air Flow Shirt is a worthy companion for the day's journey with its quick-drying 100% polyester mesh (70% recycled) that delivers maximum air permeability and 15-UPF sun protection. The fabric weighs nearly nothing, resists snags, and has Gladiodor odor control for the garment. Pared-down details include a non-binding crewneck, offset, non-chafing seams for unencumbered mobility, and reflective logos on the chest and the center back of neck.