Our top performing cold weather mountain bike jacket. Just because the weather changes, doesn\'t mean you have to. Thanks to Polartec® Alpha® active insulation, the Flexair Pro Fire Alpha Jacket\'s internal climate adjusts with changing conditions, eliminating the need to shed or add layers while mountain biking. Versatile enough for nearly any type of cold-weather riding, the DWR finish will shed any water, dirt, and debris the trail throws at you, while zippered pockets ensure you can carry all your riding essentials with you. Polartec® Alpha® insulation provides warmth without overheating Intake vents on chest and exhaust vent manage overheating when you’re working hard DWR finish sheds water, dirt, and debris Zippered hand pockets with elastic interior pocket to keep your stuff in place Zippered hatch for easy access to pockets on mid-layers Elastic cuffs for added comfort Length (HPS): 29", size large MATERIALS 50% polyester, 38% nylon, 12% elastane