This new Santa costume for your dog allows him to truly be Santa's little helper. Comes with one piece body and hat. Ex small 2-6lbs, neck 6-9in, chest 8-11in, length 7-10in. Small 8-13lbs, neck 8-12in, chest 13-16in, length 11-13in. Medium 14-23lbs, neck 11-14in, chest 16-19in, length 13-15in. Large 24-32lbs, neck 13-16 in, chest 19-22in, length 16-18in. Ex large 32-40lbs, neck 14-18in, chest 21-25in, length 18-21in.