Kelly Slater is an 11-time world surfing champion. John Moore is a one-time GQ Menswear Designer of the Year. Bring the two together, and the result is Outerknown—a brand that draws inspiration from the salt life and produces apparel that meets some of the highest sustainability standards in the industry. Made from heavyweight Portuguese flannel material, the Offshore Chamois Shirt makes for a rugged layer perfect for transitional temps. Designed to get even more comfortable the more you wear it, this is the kind of shirt that gets pulled out of the laundry basket before it ever sees a hanger.