Orvis added more venting to the best-selling, quick-drying Orvis Men's Open Air Caster Short Sleeve Shirt to keep you even cooler in hot, tropical climates. A super light performance blend of recycled polyester and spandex with perforated fabric under the arms to the sleeve cuffs, at the pockets, and on the back for extra breathability. Active Fit. Machine wash.FeaturesVents on back shoulders, arm holes, and chest for effective coolingPerforation Fabric under the arms, at the pocket, and beneath back yoke for extra breathabilityFour-way stretchUPF 30 sun protectionOutSmart fresh odor controlSunglasses cleaner in hem