Packed with synthetic fibers and armored with an impermeable membrane, Flylow's Avery Insulated Jacket simplifies our layer game. The Greenloft fill traps heat, eliminating our need for a midlayer, while the 2-layer, seam-sealed construction shuts out spray and blower snow. Under fresh snowfall, we cinch the hood over our helmet. On deep days, we zip in the powder skirt for extra coverage. And when the sun comes out fierce or we're charging hard, we open the underarm vents to let our building heat billow out.