Patagonia's most technical button-up fishing shirt, designed specifically for hot and humid conditions. Made from an ultralight, quick-drying nylon/polyester blend with mechanical stretch, it combines cool-wearing comfort with technical performance. Great comfort and ease of motion while casting. Two vertical-zip chest pockets hold anything you need to access quickly and feature mesh backing for improved ventilation and drainage; the zippers are durable plastic to prevent corrosion in saltwater environments. Collar snaps keep collar from flapping on windy days. Hidden lens cleaner at the hem keeps optics clear. Weight: 5.6 oz.