Filson's Vintage Flannel Work Shirt pairs thick brushed cotton twill with reinforced seams for reliable warmth and mobility during work or outdoor layering. Key attributes: Green | Navy | Brushed cotton twill | Warm | Breathable | Durable construction | Melamine military-style buttons | Adjustable cuffs | Double-needle seams and bar-tacked reinforcements | Plaid pattern | Back yoke with two pleats for increased mobility | Button-front | Brushed finish for a soft hand | Dimensions & fit: Available sizes: M | L | XL (manufacturer sizes) | Composition & care: 100% cotton | Machine wash.