Castelli Alpha Doppio ROS Jacket

Castelli Alpha Doppio ROS Jacket Castelli’s Alpha Doppio ROS Jacket is the latest iteration of the brand’s top-rated winter jacket. It offers warmth; breathability; and a high level of rain protection along with a soft; comfortable fit; and leads the way in demonstrating how a winter jacket should perform. Castelli have used a double-layer construction; so the outer wind-protection layer can be opened for airflow and to let moisture escape; allowing sweat and moisture to dry for greater warmth when the outer layer is zipped back up. This jacket uses a softer; warmer Polartec® Alpha Direct insulating layer; and the neck comes up high; with a shape that moves to fit even when riding down in the drops. For the waist; a stretch layer with a silicone bead completely seals out wind without bunching or riding up. There’s a double-layer wrist opening; with an inner layer that goes under gloves to seal to the wrist; and an outer layer that goes over gloves to keep the elements out. This jacket will also hold up well in wet conditions; thanks to GORE-TEX INFINIUM™ WINDSTOPPER® fabric along with waterproof seam taping on critical seams around the shoulders. Other seams are hidden out of direct water flow; and the water-repellent treatment on the fabric is sufficient to prevent most moisture from entering. Castelli call it “essentially waterproof;” finding a balance between water protection; breathability; and comfort. It doesn’t mean that no drop will ever come in; but it’ll keep you completely dry on longish rides in real rain.