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UA Microthread technology dries faster, doesn't cling, prevents chafing and stretches without absorbing sweat. Signature Moisture Transport System wicks away sweat to keep you dry. Lightweight, 4-way stretch construction and classic racer back design for free movement. Chafing-free ergonomic flatlock seams. Shaped hem for better coverage. Reflective logos for those low-light runs. Let Under Armour's Threadborne Streaker Short Sleeve Running T-Shirt take care of comfort so you can focus on fitness. This T-shirt is made with Microthread technology to dry fast and stay comfortable, while the Signature Moisture Transport System wicks away sweat. It's made in a lightweight, 4-way stretch construction with a classic racer back design, both giving you freer movement. Under Armour. 100% polyester. Round Neck. Plain. Short Sleeve. Colour: blue