One of the lightest offerings from Gore Bike Wear, the Xenon 2. 0 AS Vest is the perfect way to quickly enhance your core warmth during a mountain descent. Using the Xenon jacket as a base, Gore engineered the vest to offer excellent wind and water protection and better breathability. The key to this is the Gore Tex Active Shield fabric. The Gore Tex Active Shield fabric offers extreme breathability with water and windproof protection. Lightweight three layer construction is soft on the skin, yet durable for long lasting performance. A proprietary lamination technology integrates the backer textile directly into the Gore Tex membrane. The full front zip lets you quickly change air flow for comfort or, with the help of a draft flap, block it out completely. The long drop tail protects from road spray, and its elastic with a gripper hem to prevent migration. Having access to key items while riding is essential, so Gore gave the Xenon 2. 0 Vest a large zippered back pocket to hold gear. The Gore Bike Wear Xenon 2. 0 Vest is available in Black, Red, and White. It comes in sizes Small through X Large.