This is one large dog coat that is a definite must-have for your big dog's winter wardrobe. The outer shell is 100% nylon with a poly-urethane coating to prevent water from leaking in.  Like all the bombers, a 1/4" thick 3M Thinsulate water-resistant poly-filling is sandwiched between the outer shell and interior fleece lining for added thickness and warmth.  Other features include: reflective silver trim along shoulder seams and back of jacket for increased visibility, full zip-front closure, zipper guard to protect fur, two slanted zip pockets, horizontal quilting lines for detail, and toggles for optimal fit. Care: Machine wash cold with non-detergent based soap i.e. Wool-Lite to retain water proof properties. Lay flat to dry.  Made in Seattle, Washington.