Blue & Pink Star Pattern For XS and Small Breeds 100% Polyester X-SmallChest 10-12.5"Neck 5-7"length 10" SmallChest 12-15"Neck 7-9"Length 13" Medium (our 12 lb shih tzu wears this size) Chest 16-18"Neck 9-11"Length 14" Large (our 16 lb shih tzu wears this size)Chest 18-20"Neck 11-13"Length 14.5".
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