Please make sure to check the size (look on the size chart and image ilustration) before you make an order * Large: Neck 12"-15", Length 20"-24", Girth 23"-26" * Medium: Neck 10"-12 1/2", Length 14"-18", Girth 21"-24" * Small: Neck 8"-10", Length 8"-12", Girth 18"-21" * X-Small: Neck 6"-8 1/2", Length 6"-9", Girth 15"-18"