MEDIUM - BLACK - Houndstooth Hat and Scarf Sets Jaunty, Dapper, Fun... Just a few of the words that help describe this Houndstooth Hat and Scarf set. This sets dapper design will attract lots of attention whether you are driving down the road or at the dog park. Your dog will feel Jaunty as he bounds around wearing his new houndstooth duds. Scarf adjusts to fit and the hat has a sparkling rhinestone bone accent. Available in the following sizes: X-Small fits up 8 inches to 10 inches Necks; Small fits 10 inches-12 inches Necks; Medium fits 13 inches-15 inches Necks; Large fits 15 inches-17 inches Necks; X-Large fits 18 inches-20 inches Necks. Apparel Sizing Guide: For a proper fit, measure the diameter of your dog's neck and match it to the sizing information provided. The Hat is proportional in size to the neck measurement. Apparel Sizing Guide: For a proper fit, measure the diameter of your dog's neck and match it to the sizing information provided. The Hat is proportional in size to the neck measurement.