Castelli Women's Alpha Jacket - Blue

With Alpha we’ve detached the insulation layer from the windproof layer so that you can open the windproof layer while climbing to let air in to ventilate and help evaporate moisture. When you’ve hit the summit, zip up the windproof outer layer and enjoy a warm, dry descent. WE STARTED WITH A BLANK SLATE At the waist we have a new fabric and construction that lies completely flat and is streamlined for aerodynamics, yet when you drop into the riding position it follows your body without binding or billowing. At the wrists we have a new flat raw-edge construction that interfaces perfectly with our gloves to keep drafts out and improve comfort. At the collar we have a new articulated construction that follows the angle of your neck whether you’re standing or riding in the lowest aero position. With our latest fabrics we can essentially build a winter jacket that will keep you warm in all but the most extreme conditions with just a base layer underneath. Riding in these pieces shows how effective they are at regulating temperature and comfort while helping to keep you drier.

• Articulated collar that fits better whether standing or riding
• Gore® Windstopper® 150 fabric is windproof and water resistant,
• with four-way stretch for freedom of movement
• Better ventilation and better moisture evaporation thanks to
• separate insulating layer
• Asymmetric external YKK Vislon® zipper slides easily and
• lies flat
• Raw-edge waistband with silicone gripper lies flat and
• moves with you
• Raw-edge wrist cuffs lie flat for a perfect interface with
• gloves
• Back ventilation
• Front zippered pocket
• 3 rear pockets
• Zippered rear pocket with reflective webbing