The Sinergia 2 is the perfect basic thermal jersey for fall and spring. The warm material and drop pocket construction are key to the performance of this jersey.
Most of us wear long-sleeved jerseys for a few days in spring and fall, then expand their range of use with a vest in cooler weather, and pull them out again for insulation use under a jacket in extreme cold. So a thermal jersey shouldn’t be too bulky or complicated, yet you don’t want to be boring. Castelli has equipped it with all the essential features: great fabric and fit, perfect pockets, and Castelli’s lightweight, smooth-running YKK® Vislon® zipper.
Features – Sinergia 2
- Warmer material
- Colored stripe plus Castelli logo on chest
- Full-length YKK® Vislon® zipper
- 3 back pockets with contrasting construction
- Reflective piping on lower back
Technology
WARMER
Warmer is more than a name, it’s exactly what the fabric delivers during workouts. Its fleecy inside keeps you warm, while 100% polyester fibers quickly wick sweat away. It’s the fabric of choice when thermal insulation is equally important as moisture management.






















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