A glance at the periodic table will tell you that Xenon the element is heavier than oxygen, but 30 seconds in Gore Bike Wear's Xenon Men's Jersey will tell you otherwise. Its oversized mesh panels at the back and sleeve make you feel as if you're not wearing anything at all, while the welded seams forego traditional stitching to make the jersey lighter, sleeker, and more comfortable. Gore designed the Xenon to fit tightly, too, so you slice through the wind like a buttered seal through the waves, and gave it a full length front zipper to offer you unlimited ventilation possibilities. The body is made from a supportive and comfortable blend of nylon and elastane, while the dropped rear hem has an elastic gripper to prevent slippage. Topping the Xenon off are 360 degree reflective details and a four pocket system three drop in and one zippered to keep gels, tools, and water bottle within easy reach.