Name: Castelli Cold Days 2nd women sleeveless base layer - Black
SKU: ITY25518467
Availability: InStock

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Castelli Cold Days 2nd women sleeveless base layer – Black

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Castelli Cold Days 2nd women sleeveless base layer – Black

Castelli Cold Days 2nd women sleeveless base layer – Black

In Clothing

~~$100.00~~ $50.00

SKU: ITY25518467

Availability: In stock

Castelli Cold Days 2nd women sleeveless base layer: advanced insulation for winter cycling

The Castelli Cold Days 2nd women sleeveless base layeris an innovative solution for those who practice cycling in cold conditions. Made with Polartec Alpha 90, an active insulating fabric in recycled PET, this Jersey delivers superior thermal performance without adding excessive weight. Unlike traditional technical base layers, Polartec Alpha retains elasticity and softness, ensuring comfort during long rides on gravel and road. The high-loft structure of the fabric creates air chambers that trap body heat, providing a 5 C increase in thermal comfort. This second layer proves especially effective when worn over a long-sleeve technical base layer, creating an optimal combination for riding in sub-zero temperatures.

Ergonomic design and versatile use

The design of the Jersey was developed with the specific needs of cyclists in mind. The half zip positioned slightly off-center reduces bulk in the neck area, avoiding annoying fabric build-up. This solution allows you to regulate ventilation without creating extra volume in the lower torso area. The close fit allows the Jersey to be worn either inside or outside the Bib tight, adapting to different personal preferences. Compatibility with technical base layers such as Flanders, Bandito, Miracolo and Seamless expands pairing possibilities, allowing cyclists to customize their thermal layering system according to weather conditions and individual preferences.

Thermal performance and environmental sustainability

The maximum breathability of Polartec Alpha 90 ensures that moisture generated during physical effort is effectively dispersed, preventing the sticky feeling typical of other insulations. The fabric, made from recycled PET, represents an environmentally conscious choice, reducing the ecological impact of production. Polartec Alpha’s active insulation technology works in synergy with the body’s natural thermoregulation systems, retaining warmth without compromising breathability. This makes the Jersey ideal for long winter rides, where moisture management is crucial to maintain comfort and prevent hypothermia.