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Description
Insulation for Sub-Freezing Rides
Worn between your base layer and jacket, the Castelli Cold Days 2nd Baselayer adds maximum insulation and moisture management for cold rides. The half zip avoids bulk over your lower torso, and the close fit lets you tuck it in or leave it out. It also works well over Castelli Flanders, Bandito, Miracolo, or Seamless base layers.
Features:
- Polartec® Alpha® 90: High-loft active insulation made from recycled PET
- Breathability: Maximum
- Zipper: Asymmetrical, mounted off-center to avoid zipper bulk at the neck
- Collar: High
- Fit: Regular
- Temperature Range: -8°C - 5°C / 18°F - 41°F
B-Stock - This product has one or more B-Stock units available. These units can be purchased at a discount (see option select). B-Stock units were returned from other customers and may have missing or damaged packaging materials. These units are otherwise as new. The full manufacturer warranty applies. Click Here for more information.
Size Chart
| S | M | L | XL | |||
| Chest | 35½"-37" | 37"-38½" | 39"-41" | 41"-43" | ||
| Waist | 30"-32" | 31½"-33½" | 33½"-35½" | 35½"-37½" | ||
| Hips | 36½"-38½" | 38"-40" | 40"-42" | 42"-44" |
Specifications
Black - Small | Mfg PartNum: A4526535010-2 |
Black - Medium | Mfg PartNum: A4526535010-3 |
Black - Large | Mfg PartNum: A4526535010-4 |
Black - X-Large | Mfg PartNum: A4526535010-5 |
Black - 2X-Large | Mfg PartNum: A4526535010-6 |



















