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Sure, it might be a little chilly outside, but the Mountain Hardwear Beta Power 1/4-Zip Long-Sleeve Shirt provides all the warmth you need in order to keep your training runs going in early spring or late fall. This midweight layer's semi-fitted cut allows for easy layering on top when clouds roll in, and the 1/4-zip front opening is perfect for venting away excess heat when you're pounding pavement, skiing, or ticking off mileage on the trail.

  • Semi-fitted cut keeps this top close to your skin to eliminate bulk without getting too uncomfortably tight
  • Beta French Terry fabric allows chilling moisture to move away from your skin to the surface of the fabric so you stay warm and dry in cold weather
  • A touch of elastane allows the Beta French Terry fabric to stretch and flex so this shirt moves with you
  • Flatlock seam construction eliminates bulges that can cause chafing and hot spots at seams
  • Reflective trim keeps you visible in the headlights of cars at night