When the temperature and hunting action are hot, keep your cool and stay comfortably dry. Columbia's innovative Omni-Freeze® advanced cooling fabric technology transfers heat away from your body. Fast-drying 100% polyester pique has a UPF rating of 30 to protect you from the sun. Great worn under an upland vest or as a base layer in colder weather. Imported. Sizes: M-2XL. Color: Blaze Orange/Tan.