London Fog Boys Colorblock Systems JacketLondon Fog outwear winter coat has a water resistant and wind resistant outer shell with a warm polyester fleece lining and polyester fill. Polyester fill is a warm hypoallergenic alternative to down jackets and down filled coats. For the coldest days wear the coat with all layers. As the weather changes, you can zip out the fleece lining and wear it alone. OUTERWEAR INCLUDES: 1 4 in 1 convertible winter coat WARMEST OPTION: London Fog outerwear snow