Patagonia M's LS Self Guided Sun ShirtThe do-it-all Men's Long-Sleeved Self-Guided Sun Shirt combines intuitive, on-the-water/trail performance with 40+ UPF sun protection and breezy, all-day comfort. Stretchy, quick-drying 100% recycled polyester fabric moves athletically, stays cool and looks snazzy in any situation. Made in a Fair Trade Certified factory.Style 41825 - Regular Fit Fabric Details - Comfortable, lightweight, quick-drying 100% recycled polyester plain weave with 40+ UPF sun protection and mechanical stretch for easy movementPocket Details - Two vertical chest pockets with corrosion-resistant zippers fit fly boxes; two button-closure chest pockets keep essentials close, and there's a hidden tool dock under the right-chest pocket flapCollar Details - Double-layer collar converts to a stand-up collar for additional sun protection, and hidden snaps at the collar points eliminate flapping in the windStay-Cool Venting - Open venting across the back and shoulders increases airflow for cooling comfort in steamy weatherFit Details - Extended hem stays in place while casting, rowing or hiking to enhance comfort and sun protection, and the shirt won't bunch or ride up when worn with hip packsLens Cleaner - Integrated, intuitively positioned, easy-access lens cleaner is sewn in at the front hem to ensure clean optics without having to search for your lens clothThis garment has a Regular Fit