Quick answer
To properly fit the Le Col Pro Insulated Jacket over your cycling kit, start with a moisture-wicking base layer and a thin mid-layer, then put on the jacket, ensuring the hem and cuffs seal without restricting movement. Adjust the zipper and vents to match your effort level.
Why layering matters for the Pro Insulated Jacket
The Pro Insulated Jacket uses Polartec® Alpha™ Active Insulation, which is designed to provide targeted warmth while staying breathable. To take full advantage of this, you need to layer correctly underneath. Too many thick layers trap heat and moisture, while too few leave you cold when you stop.
The jacket itself is quick-drying and lets excess heat escape, so your base and mid layers should focus on moisture management rather than bulk. Avoid cotton at all costs.
How to fit the Pro Insulated Jacket over your kit
- Start with a thin, moisture-wicking base layer: Choose a long-sleeve merino or synthetic base layer that fits snugly. Avoid thick thermal tops, as they add bulk and reduce the jacket's breathability. A common mistake is wearing a thick fleece under the jacket, which traps sweat and leads to chills.
- Add a lightweight mid-layer if needed: For very cold rides (below 5°C), add a thin cycling jersey or wind-blocking gilet. Zip it up fully before putting on the jacket to avoid bunching. Check that the mid-layer does not extend past the jacket's hem or cuffs, or it will wick moisture outside the insulation.
- Put on the Pro Insulated Jacket and zip up: Pull the jacket over your shoulders, ensuring the collar sits comfortably under your helmet straps. Zip up fully, then adjust the hem drawcord to keep the jacket close to your body without restricting hip movement. If the jacket feels tight across the chest or shoulders, remove the mid-layer rather than sizing up—the jacket is meant to be close-fitting for insulation.
- Check the cuffs and neck seal: The cuffs should sit snugly over your gloves or long sleeves, without riding up when you reach for the drops. The neck should be close enough to block drafts but not so tight that it chokes. A common error is leaving the collar unzipped, which lets cold air rush down your back.
- Test mobility and ventilation: Swing your arms and lean into a cycling position. If the jacket pulls at the shoulders or rides up, loosen the hem drawcord slightly. Open the front zipper a few inches to dump heat when climbing. Remember: the jacket's breathability works best when you are moving. In heavy rain or at a standstill, add a shell layer over it.
Product facts
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Pro Insulated Jacket: The Pro Insulated Jacket features Polartec® Alpha™ Active Insulation across the core for targeted warmth and exceptional breathability. This means you can wear it during high-intensity rides without overheating, as long as your base layers wick moisture effectively.
Pro Insulated Jacket



