L. L. Bean offers a Wool Field Shirt but it has a button down collar that to me ruins it for expedition wear. So, I contact L. L. Bean customer service and sent them this email: "For years I have been wearing your Cotton Poplin Field Shirt on camping and 4-wheeling trips throughout the western U. S. . If I have one complaint it is that it does not come in a dark khaki shade. Although these shirts have served me well it would be nice to have a 100% wool shirt for those early fall trip. I would purchase your Wool Field Shirt but the button down collar is a complete turnoff for me. I just can't imagine Roy Chapman Andrews wearing a button down collar in the Gobi. Please consider changing the pattern of your Wool Field Shirt to that of your Cotton Poplin Field Shirt. And also consider offer your Cotton Poplin Field Shirt in a dark khaki." If enough p[eople contact L. L. Bean we might get a "Wool Safari Shirt".