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Beta: Best Effing Training Attire.

The Mountain Hardwear Women's Beta Power 1/4-Zip Long-Sleeve Top keeps your core feeling fly so you can start your day with an early-morning, blood-pumping training session. Feel-good Beta French Terry fabric helps manage moisture so your body can better regulate its temperature, flatlock seams prevent chafing when you're on the move, and thumb loops keep your hands warm and your sleeves where they belong. Mountain Hardwear gave the Beta Power reflective trim, too, to help you shine like a beacon of fitness on low-light runs.

  • Flat lock seams
  • Thumb loops
  • Zippered back pocket
  • Reflective trim

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Mountain Hardwear Beta Power 1/4-Zip Top - Long-Sleeve - Women's

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Here's what others have to say...

5 5

Awesome top.

  • Familiarity: I've used it once or twice and have initial impressions
  • Fit: True to size

Just got this and have used it a few times biking and running this fall. Love the material and warmth it provides without being bulky. Great layer. Fits well and feels good. Love the thumb hole option too!