Under Armour Mens Performance Heather Stripe Polo Loose: Full, loose fit for enhanced range of motion & breathable comfort . Soft anti-pick, anti-pill fabric maximizes comfort and has a cleaner, snag-free finish. 4-Way Stretch fabrication allows greater mobility and maintains shape. Anti-Odor technology prevents the growth of odor causing microbes. 30+ UPF protects your skin from the sun's harmful rays.