The Z1R Duke Flannel is made from 100% thick cotton, giving you the perfect comfort in the cooler seasons. The Duke Flannel has an internal mesh liner to soak up sweat and keep you nice and comfortable. Expanded shoulder gussets allow you to maintain a full range of motion on and off the bike.; 100% thick cotton flannel shirt Internal mesh liner for moisture wicking Expanded shoulders for increased mobility 2 interior concealed carry pockets 2 exterior chest pockets Snap and zipper closures