Isadore Alternative Insulated Jacket, a lightweight, high-performance insulated jacket engineered for fast, high-tempo rides in cold and dry conditions. Built with Pertex® Quantum Air and Polartec® Alpha® Direct, it delivers exceptional breathability, wind protection, and insulation—without sacrificing speed. The narrow racing cut and recycled high-density fabrics create an aerodynamic silhouette that performs as good as it looks, bringing technical craftsmanship and sustainable innovation together in one piece.Sizing tips: This jacket has an intentionally narrow racing cut and fits small. Order one size up from your usual size. If you have broader shoulders, consider sizing up two full sizes for comfort. The jacket is shorter in the torso with a non-stretch front hem to maintain an aerodynamic profile; the back hem features a stretchy recycled silicone gripper. Expect it to feel snug under the arms and across the shoulders when standing upright — this is normal. Always test it in a riding position. Once you lean forward, the fit relaxes and aligns as designed for cycling performance. Keep in mind: this is an aero race fit with a narrow waistline, optimized to reduce drag and feel weightless on the bike. Technical Highlights: Optimal temperature range: –5°C to 10°C Pertex® Quantum Air outer fabric on front, shoulders, and upper sleeves Polartec® Alpha® Direct insulation for unmatched breathability and quick-dry performance High-density recycled fabric on back and inner sleeves prevents heat loss Fluorine-free water-repellent coating repels light moisture and dirt Three spacious back pockets + secure zippered pocket and zippered chest pocket Recycled YKK® Natulon® two-way zipper and recycled silicone hem gripper Reflective elements for low-light visibility Wind protection with exceptional breathability Made in the EU
