Innovative thermal regulation (Polartec® Alpha®), windproof and water-repellent properties, compressibility – this is the recipe that makes our ksyrium Thermo vest a perfect fleece for autumn and spring. A must-have for many outdoor activities.

Main features

Polartec® Alpha®: keeps you warm without overheating

Polartec® Alpha® is an innovative insulation designed for intense winter activities such as cross-country skiing, ski mountaineering, or trail running. In these activities, athletes often face extreme temperature variations without the option to shed multiple layers.

Polartec® Alpha® successfully combines warmth, compressibility, and extreme breathability like no other insulation, making it perfectly suited to the needs of all cyclists when paired with a lightweight windproof fabric.

Windproof and water-repellent

We combined Polartec® Alpha® with our best windproof fabric.

Extremely lightweight, stretchy, and water-repellent, it's the perfect combination to enhance the performance of our Ksyrium Alpha® jackets and vests.

Ultra-versatile, compresses into a pocket

Versatility is the key design idea behind our Ksyrium Alpha® jackets and vests. We aimed to create the perfect insulating jacket that you could use not only from autumn to spring but also for all your outdoor activities:

Wear it with a long-sleeve jersey for autumn or spring rides, and pack it away in a pocket when the temperatures warm up,

Use it as an insulation layer on the coldest winter days under a jacket,

Take it with you on all your outdoor activities: mountain biking, bike packing, cross-country skiing, ski touring, hiking...

Specifications

Composition

Composition: Body_90%PA - 10% EL Lining body_100% PL