Most of us use long-sleeve jerseys for a few days in the spring and fall, then extend their range with a vest in cooler weather, then pull them back out for insulation duty under a jacket in freezing cold. So a thermal jersey shouldn't be too bulky or complicated, yet you don't want boring.

Castelli built the Sinergia with all the essential features like great fabric and fit, perfect pockets, and our lightweight easy-sliding YKK® Vislon® zipper.

When you do wear it on its own, the small inserts in the chest and above the pockets give it an extra visual touch, and they happen to be reflective should you extend your ride to evening.

Specifications

  • Designed to be worn at 14-20 °C
  • Warmer fabric
  • Iridescent reflective inserts on front and back
  • Lightweight YKK® Vislon® easy-sliding zipper
  • 3 rear pockets
  • Weight: 235 g

Consult the size chart

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