Gear up for full-throttle action with these Mocean Polo Shirts. Designed specifically for the demands of bicycle units, each Shirt is breathable and moisture-wicking for the highest-activity scenarios. 97.5% polyester, 2.5% X-STATIC silver nylon (5.95 oz.) Moisture-wicking thermodynamic technology keeps you cooler in summer, warmer in winter Antimicrobial and anti-odor All-natural, 100% safe and non-toxic fabric with no chemicals or pesticides Anti-static with high electrical conductivity Double-needle stitching and reinforced placket Sports collar