Outback Trading Co Men's Co. Oilskin Willis With Mesh Hat Sage X-Large The Willis with Mesh has the comfort and practicality you need for any scenario. Whether you are out hunting, hiking, or getting groceries the Willis is the hat for you. 100% Cotton means this hat is incredibly comfortable, and the mesh lining allows air to whisk through the top of the hat keeping your head cool. The Dual-action Marine style chin strap keeps this hat in place. Don't go out without the Willis with Mesh from Outback Trading Company.