Warm, stylish and fitted to perfection, this Whistler sweater is an American classic. Covering the dog’s chest for warmth, this wool sweater leaves room underneath for clean and easy curbing. Available in sizes 8"-18. Material is 50% Wool and 50% Acrylic Katie is 15lbs and is wearing the 14" Whistler sweater. Machine Wash. This timeless sweater will keep your pet warm and cozy while still looking their best. It's designed to fit perfectly and the material is lightweight yet durable – you can even throw it in the machine when it's time for a wash. Available in sizes 8"-18, this Whistler sweater will have your pup snuggled up (and stylish) all season long.