Billabong Men's Coastline L/S Flannel A fresh take on a mountain classic, the Billabong Coastline Flannel Long Sleeve Shirt features blended cotton fabric with just the right amount of stretch to move freely, plus front buttons and a chest pocket for extra convenience. Fabric: Cotton polyester mechanical stretch flannel blend fabric. Neck: Collar neck. Sleeves: Long sleeve. Closure: Button up closure. Pockets: Chest pocket. Product appearance may differ slightly depending on print placement. Materials: 85% Cotton, 15% Polyester