The original Filson Alaskan Guide Shirt has proven itself a favorite time and again from Alaska to Maine to the Rockies, and when our customers asked for a version that was comfortable in southern climes and warmer months, we listened. The result, built with midweight 5-oz. cotton twill, has exceeded all expectations for versatility, comfort and universal utility. The brushed cotton is soft, yet durable. The relaxed fit and rear-shoulder box pleat allows non-binding ease of motion, while allowing plenty of airflow when the day and activity levels heat up. It's prewashed for shrinkage control and a broken-in feel from the first day. Expandable, gusseted chest pockets with button-close flaps keep small valuables handy and secure. The custom Filson-logo buttons on the front closure and adjustable cuffs are built with tough, chip resistant polyester for years of durability.