Polar Max Men's Micro H1 Long Sleeve Crew Top with Insect Shield & Advance Cooling 100% Other Fibers Made in US Lightweight relaxed fitting multi-purpose Crew. Ideal for hot to moderate conditions Acclimate AC, activated by the moisture from your sweat, keeps you cooler to the touch Insect shield will keep any unwanted pesky bugs at Bay Acclimate Dry performance for superior moisture-wicking/Quick drying. ag47tm antimicrobial protection kills odor causing bacteria UPF sun protection Rating of 39+. 94% Acclimate Dry Polyester/6% Spandex