Size S A trip to the store, potty break, doggy daycare; wherever you go this winter; you will want this coat! Each coat is a waterproof shell with a flannel lining. There is a Velcro closure on the bottom for easy on and off. When measuring the girth is the most important measurement. Fits: Neck………. 7-10 inches Girth……….14-15 inches Length……..11 inches long If you have any questions send me a message!