Assos name the main fabric of the Women's Tiburu LaaLaLai Jacket stratagonUltra milleRighe: This technologically advanced ASSOS exclusive fabric has a thermo-response membrane designed to keep you dry when sweating and protect when it rains. Consisting of a two layer memoryFoil shield composite that is water impermeable and responds to conditions with a flexible barrier function you're assured of all weather protection and comfort. In order to prevent the build up of excess perspiration that leads to chills, the side and rear panels are more breathable, allowing that excess moisture to escape leaving you drier and more comfortable. Read more… The arms utilise Pavé Tex fabric in a raglan design meaning they are integrated all the way into the shirt rather than just attaching at the shoulder. This design offers maximum freedom of movement and a slick, flowing fit when riding. The raw cut cuffs are ultrasonically bonded to the sleeve, a high-end finish which eradicates the hem for incredible comfort and sits under gloves perfectly. A brilliantly versatile windproof jacket, this will keep the warmth in and chills out during autumn and spring and would also serve as an excellent mid-layer in early winter. If you're getting the road miles in all year round then this is a great option to add to your kit bag.