This item is Asian size .Smaller than US/AU/UK size, so Please make sure of these actual measurements will fit your pet. Thanks!
Size:XS Neck(cm/inch):30/11.81 Back Length(cm/inch):20/6.69 Chest(cm/inch):34/14.17 Size:S Neck(cm/inch):34/13.38 Back Length(cm/inch):25/8.66 Chest(cm/inch):40/16.92 Size:M Neck(cm/inch):38/14.96 Back Length(cm/inch):31/9.84 Chest(cm/inch):44/18.