Orvis Big Bear Flannel Shirt Orvis Big Bear Heavyweight Plaid Flannel shirt  or a similar "shacket" (a shirt-jacket hybrid) from Orvis. The plaid pattern, consisting of red and green hues, is often referred to as "Autumn Red and Olive Plaid" or "Red/Green Plaid". These shirts are known for being thick and durable, with some having hand-warmer pockets in addition to the chest pockets. **pre worn and in great condition. All buttons, no stains or holes