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      Product Specifications


      Body: 95% Polyester/5% Elastane

      Item #


      Style #


      US sales only.

      Item is returnable, but does not qualify for free returns.

      Under Armour ColdGear Reactor Run Long Sleeve Shirt Women's

      Taking over as the next big technical running top, the Under Armour Reactor Run Long Sleeve Tee for ladies features well-crafted technology. The ColdGear® Reactor technology offers Smart Insulation that provides adaptive, balanced warmth during any level of activity. This lightweight, fitted style is made from 4-way stretch fabric for ultimate freedom of movement. This cold weather top is perfect to wear on its on or as a layering piece for extra warmth.

      • Reflective UA logo at left sleeve and at back yoke.
      • Features 360° Reflectivity for enhanced visibility.
      • ColdGear® Reactor helps regulate warmth to keep the body temperature balanced.
      • Fitted style helps provide an athletic look and feel.
      • Specialized panels at high-heat zones offer enhanced comfort.
      • Features free-cut material at the wrist with built-in thumb holes for added coverage.


      Small: 34.5-35.5" bust
      Medium: 36.5-38" bust
      Large: 39.5-41" bust
      Extra Large: 43-45" bust

      *Measurements refer to body size, not garment size.