The Castelli Men's Cold Days 2nd Layer provides maximum insulation and moisture management for cold rides when layered between a base layer and a jacket.
Polartec® Alpha® fabric is an amazing insulator, and it's soft, stretchy, and lightweight. A couple of years ago Castelli thought it would make an excellent fabric for a base layer, but it tended to feel wet and clammy against the skin. But when looking for more insulation for sub-freezing gravel rides, they tried using the Alpha® prototypes as a second layer on top of a Prosecco base layer — and stumbled into the best combination for cold riding. They worked on the details and created this second layer for cold rides. It's been given a half zip so it doesn't create bulk over the lower torso, and they've mounted the zip slightly off-center to avoid the bulk of multiple zippers at the neck. They've kept the fit close to body so you have the choice to tuck it into your tights or leave it out. It also works well over a Flanders, Bandito, Miracolo, or Seamless base layer.
Returns: Openbox, B-Stock, and Closeout products can be returned within 60 days for store credit.
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| S | M | L | XL | 2XL | 3XL | |
| Chest | 36¼" | 37¾" | 39½" | 41¼" | 43¼" | 45¼" |
| Waist | 31½" | 33" | 34½" | 36½" | 38½" | 40½" |
| Hips | 37" | 38½" | 40" | 42" | 44" | 46" |
| Inseam | 32¼" | 32.67" | 33" | 33½" | 33.85" | 34¼" |
Sleeve Type: Long Sleeve | |
Black - Small | Mfg PartNum: A4522531010-2 |
Black - Medium | Mfg PartNum: A4522531010-3 |
Black - Large | Mfg PartNum: A4522531010-4 |
Black - X-Large | Mfg PartNum: A4522531010-5 |
Black - 2X-Large | Mfg PartNum: A4522531010-6 |
I was skeptical at first with the mesh design, but it works. No cold sweat here. Paired with a quick dry shirt or mesh Castelli 2.0 shirt and Castelli fly jacket. It keeps me dry even after 2 hours of riding. It is lightweight and packable. Only drawback IMO is the fabric looks delicate, but so far it is holding up well. This is a must for cold winter months.
