The Columbia Super Slack Tide Camp Short-Sleeve Button-Down Shirt is made from lightweight, quick-drying 100% polyester for ultimate comfort. Whether you're fishing offshore or just chilling at a beachside caf, you'll love the feel and look of this men's button-down shirt. A vented back pairs with Omni-Wick moisture-wicking technology to keep you cool and dry, and Omni-Shade UPF 40 sun protection safeguards your skin. This Columbia shirt is finished with a convenient left-chest pocket that keeps small essentials close. Machine wash. Imported.Manufacturer style #: 165376. Quick-drying 100% polyester fabric Omni-Wick moisture-wicking technology Omni-Shade UPF 40 sun protection Vented back Left-chest pocket