Eco-friendly high-tech bamboo fiber offers exceptional performance and long wearing comfort. Adaptive to your body temperature, bamboo fabric keeps you cooler in the Summer and warmer in the Winter. Advanced moisture wicking and natural anti-microbial properties combine for an odor-resistant garment. Also protects sensitive or allergy prone skin with hypoallergenic properties and has a high UV rating for sun protection. Long Sleeve ¼ Zip Shirt. Made from HYPERTECH™ Bamboo Mesh fabric: 52% Bamboo, 48% Polyester. Heather, White, Olive or Blue. Sizes S-XXL. Made in America