adidas Performance Men's Techfit Climachill Long Sleeve 76% Polyester, 24% Elastane Imported climachill keeps you cool with a meshlike fabric and aluminium-silver dots that conduct heat away from the body Crewneck collar; "TECHFIT" on back neck; Two-color mesh details Ultra-soft seams and strategically placed flatlock seams for reduced chafing UPF 50+ UV PROTECTION; Printed adidas brandmark on left shoulder Compression fit for support and reduced muscle vibration; Polygiene odor control, based on silver salt (silver chloride) made from recycled silver, helps clothes, footwear and gear stay fresh and last longer between washings