Columbia Slack Tide™ Camp Shirt ul)100% polyester. Omni-Wick™ moisture-management properties. Vented. Sunglass cleaning patch. Utility loop. Omni-Shade™ UPF 50 sun protection. Columbia patch logo. This product meets the following Sustainable Style subcategory:Socially Conscious Manufacturing: This product was made in a facility that has submitted assessment using Higg FEM, Higg FSLM, and Higg, made by a mill who partnered with Better Work and has partnered with or is accredited by the Fair Labor Association.