The size is generally S, but some items are M. These clothes were for my dog when he weighed about 4 kg, and almost all of them are unused. Please refrain from purchasing if you are sensitive to used pet items. A set of 10 dog clothes with various designs and materials, perfect for small dogs. Includes a raincoat. - Quantity: 10-piece set - Colors: Various colors - Size: For small dogs Thank you for looking.