Aviator Nation Navy/Yellow Lightening Bolt Sweatshirt. Size Small Description: Our bolt design is simple and awesome! And now we are doing it on a cozy crewneck sweatshirt! The most comfortable sweatshirt you'll ever own. Our single needle stitch work gives each garment a unique, one of a kind effect. All of our products go through an intense breaking-down process that gives them a vintage feel you'll love because it's broken in from day one of wearing it. You're going to live in this sweatshirt.