osures keeps snow, wind, and rain from sneaking in your sleevesVent zippers located under the arms to maximize air circulation during extreme heat generating activityLaminated internal media pocket to keep your MP3 player, phone, and other valuables dry and secure2 Napoleon Dri Pocket and 1 Bicep utility pocketYKK AquaGuard Vislon SPECIFICATIONS of the Westcomb Men's Switch LT Hoody340 NRS Polarte