Deep Winter Base Layer

About the Product

In deep winter, having a base layer that reacts to your body temperature is key. By using a combination of patented Polartec® fabrics, this base layer delivers supreme insulation and temperature regulation with high breathability and low fabric weight.

The Deep Winter Base Layer is our warmest base layer, developed with and chosen by pro riders when training in the off-season. Using advanced Polartec® fabric technology, the base layer optimises performance efficiency by delivering thermal protection and breathability while keeping weight to a minimum.

Polartec® Power Grid™ is strategically placed across the arms and lower back. The fabric uses a patented geometric grid construction which traps warm air to boost warmth while creating open air channels for effective moisture evaporation and improved breathability.

Polartec® Alpha™ is used across the core and upper back for supreme targeted insulation. Engineered for consistent warmth, the fabric ensures your temperature is regulated when riding at varying speed – whether you’re tackling a hard climb or descending at pace.

Product Features

  • Polartec® weatherproof technology
  • Lightweight
  • Advanced Primaloft Insulation
  • High breathability
  • 0-10°C Suitable temperature range


Everything Should Be This

I want everything I own for winter made like this. This product is phenomenal. Insulated and vented in the right places, soft and durable. There are few products I have seen that are as well designed and made as this. Large fits perfect for my 184cm, 85kg.

Why Choose Le Col

WorldTour proven

Proven to win in the cut and thrust of the UCI WorldTour, from classics, to stages, to Grand Tour general classifications. Experience elite Grand Tour-winning performance.

Tested to the limit

Developed with feedback from elite athletes, wind tunnel-tested and constructed with materials and technologies at the cutting edge of innovation.

Trusted by 250,000 Cyclists

Over 250,000 cyclists worldwide have chosen Le Col, creating a vibrant space for cyclists to connect both online & IRL through our LC__CC community.

Cutting edge technology

Our products push the boundaries of performance and comfort, integrating state-of-the-art materials and advanced design elements into every garment we produce.