A new wind is blowing in breathable fabrics. Each time, the same paradox arises: excess body heat must be able to escape, while cold air from outside is kept at bay. It is rather like the principle of a cat flap applied to textiles. Engineering is therefore at the heart of this collection. Thanks to an exceptionally dense knit, this fleece is four times more wind-resistant than a standard alternative. Unlike traditional windproof fabrics, which rely on rigid membranes, this material remains highly breathable, allowing excess heat generated by movement to dissipate while maintaining optimal insulation. The conundrum is now solved.