Columbia Bahama Ii L/S Shirt SUN PROTECTION: Columbia's signature Omni-Shade UPF 30 fabric blocks UVA and UBA ray to help prevent sunburn and longter skin damage during long hours in the sun. ADJUSTABLE FEATURES: This men's fishing shirt features buttons at arms to convert long sleevs to short sleeves for hotter days. COMFORT & BREATHABILITY: This long sleeve fishing shirt features hidden vents at shoulders and 100% nylon quick dry fabric for ultimate breathability and comfort. RELAXED FIT: This men's Columbia PFG long sleeve shirt features a relaxed, lightweight fit for maximum comfort during fishing activities Columbia's PFG Bahama II Long Sleeve shirt is the ultimate accessory to day out on the water. Omni-Shade UPF 30 Sun Protection Quick Dry Fabric Vented In Back