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Sinergia 2 Full-Zip Long-Sleeve Jersey - Women's

4.5 out of 5 stars
2 Reviews
Current price: $90.99 - $97.49 Original price: $129.99
Up to 30% off
Color:Belgian Blue/Silver


Size Chart


Why We Like The Sinergia Full-Zip Long-Sleeve Jersey

Thermal jerseys are best when they’re versatile, that’s why Castelli keeps the Sinergia 2 streamlined for the perfect layering when things get cold. It offers just enough thermal warmth for chilled spring starts and cool fall evenings, but a sleek fit that’s ideal under a jacket when the mercury dips way down.


  • A sleek and classic jersey for cool weather rides
  • Brushed thermal fit is soft and warm against skin
  • Sleek fit is perfect for layering under jackets
  • Offers just enough warms on cool fall rides
  • Lightweight YKK zip slides easily for venting
  • Three rear pockets and reflective piping finish it off just right
  • Item #CSTZ7JD
[main fabric] Castelli Warmer
fall, winter, spring
3 rear
road cycling
Manufacturer Warranty
1 year

Overall Rating

4.5 based on 2 ratings

Review Summary

1 Stars - 0 reviews
2 Stars - 0 reviews
3 Stars - 0 reviews
4 Stars - 1 reviews
5 Stars - 1 reviews

Fits Slightly Large

Screen reader users: the following list provides a visual scale to illustrate the product fit. Please refer to the heading above for the fit type in text.
Runs smallTrue to sizeRuns large

What do you think about this product?


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5 out of 5 stars

April 22, 2023

Close to perfect

I've used it several times

Size small is perfect fit for petite 5’1” size 34C. Warm as advertised. Used from 44 to 54 degrees so far without base layer, just a Castelli wind stopper-type jacket. Looks like Castelli has gotten into the real world now for sizing. This jersey is extremely well made and finished and fits well in every aspect. Colors are rich and classic.

LanceWeaklegs L

Originally reviewed on Backcountry.com

4 out of 5 stars

December 9, 2021

Runs large for Castelli

I returned this product before using it
Size Bought:
5' 4"

I am usually a S/M in most jerseys. I bought the L in this "form-fitting" jersey., because I don't like form-fitted jerseys. I do like Castelli jerseys, however. The large is very big. It's long and loose enough to wear several layers underneath. I hate to return it, because I love the bright color, but no M is available. I gave it 4 starts for sizing only.

Elisa D