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Model Number:

The New Balance Boylston Half Zip can be worn on it's own, or as a lightweight layering piece for cooler race day conditions. The combination of mesh ventilation for breathability and a lightly brushed thermal interior for warmth makes for a versatile top.  Raglan sleeve construction enhances range of motion, and thumbholes provide extra warmth, while a back side zip pocket provides storage for small essentials. 


  • Cobalt (CBT)


  • 11" half zip with lockdown zipper and garage (size medium)
  • Jersey mesh throughout to increase breathability
  • Modified raglan sleeve construction for increased range of motion
  • Dropped back hem for more coverage
  • Thumb holes to keep hands warm and sleeves in place
  • Back side zip pocket (approx. 4.5" zipper, 3"W x 5"H)
  • Flatlock seams to reduce chafing
  • Lightly brushed interior for added warmth
  • Reflective details for increased visibility in low-light settings


  • Main Body, Jersey Melange Mesh (93% Polyester/7% Spandex), a lightweight, synthetic, stretch material with moisture-wicking and light thermal properties                         

Apparel Performance Characteristics

Apparel Fit: What's this?

  • Compression
  • Fitted
  • Semi-Fitted
  • Relaxed

Temperature Range °F: What's this?

  • Cold
    • Below 30
  • Moderate
    • 30-45
    • 40-55
    • 50-65
  • Hot
    • above 65

Fabric Thickness: What's this?

  • Thin
  • Medium
  • Thick

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