No matter how bad the weather is during work or playing outdoors, the Filson Cover cloth Bomber Jacket will keep wearers dry and protected. The bomber jacket is made from 6 ounce 100 percent tightly woven cotton Oil Finish Cover Cloth saturated with paraffin wax to beat off the wind and rain. For added warmth, optional removable zip-in vest/liners can be addded to form and inner layer of warmth. To help seal out the cold wind teh jacket has a storm flap over the front zipper, sung knit cuffs around the wrists and adjustable draw-cord at the bottom.