Men's Seawool Flannel Shirt - Deep NavyDont let the timeless looks fool youthe Seawool Flannel packs a punch in the performance department. Built from Seawool fabric, a midweight brushed twill made from upcycled oyster shells and recycled plastic bottles, these flannels deliver many of the same benefits as our powered by bamboo styles: theyre temp regulating, quick dry, anti odor, and oh so soft. Bonus points: all those recycled plastic bottles never get the chance to end up in our oceans.