Under Armour Apparel Size Chart The Streaker 2.0 running shirt is made from quick-drying stretch fabric, with Microthread technology for better performance. Mesh panels add extra ventilation, and the split hem lets you move freely. Reflective detailing helps keep you visible in low light. Features: - Fitted: Next-to-skin without the squeeze. - UA Microthread technology in the fabric dries faster, won't cling to you, won't chafe & stretches without absorbing sweat - Material wicks sweat & dries really fast - Anti-odor technology prevents the growth of odor-causing microbes - Mesh panels for added breathability - Ergonomic shaped hem for enhanced coverage - Reflective details for greater visibility on low-light runs - Body: 93% Polyester/7% Elastarell - Mesh Panels: 96% Polyester/4% Elastarell - Only available to ship within the USA