The Columbia Men's Tamiami II SS Shirt is a classic Fit button up for hot weather. Get on the boat in the morning and fish all day. The Omni-Wick Technology pulls moisture from the skin while Omni-Shade provides UPF 40 protection from the sun. No greasy sunscreen needed on the parts that Are covered plus you stay cooler thanks to the built in mesh lined vents at the back. Features of the Columbia Men's Tamiami II Short Sleeve Shirt Omni-Shade UPF 40 provides maximum protection for long hours in the sun Omni-Wick Technology actively breathes and pulls moisture away from your skin Mesh-lined vent at center back Antimicrobial treatment protects this product from bacterial growth