Handlebar Mustache Aireator 6" Timber, part of our Collaboration Collection, is a DeFeet Aireator crew cycling sock with jagged tree lines in different shades running vertically up the cuff. Available in two colorways: natural with shades of green and navy with red, orange, and yellow. Design by Handlebar Mustache. The thin profile Aireator features an open mesh weave over the foot top, making these lightweight socks ideal for all forms of cycling and everyday adventure. Breathable, moisture-wicking, and durable.