Neck circumference XS: 18 cm, S: 20 cm, M: 22 cm, L: 24 cm, XL: 26 cm, XXL: 28 cm Back long XS: 17 cm, S: 19 cm, M: 23 cm, L: 28 cm, XL: 33 cm, XXL: 36 cm Chest size XS: 28 cm, S: 30 cm, M: 32 cm, L: 34 cm, XL: 40 cm, XXL: 42 cm Pet products theme: This pet heart sweater is designed for dogs clothing, is a kind of pet products. Cute design: The sweater uses a heart pattern design, lovely and warm, to add a playful and cute atmosphere to the dog. Crew-neck slim-fit style: This sweater uses a crew-neck design, slim-fit version, fits the dog's body shape, and will not restrict the activities of pets. Warm function: The sweater is soft and comfortable, which can effectively keep warm, suitable for wearing in autumn and winter, and keep pets away from the cold. Variety of sizes: This sweater is available in a variety of sizes, suitable for different large and small dogs to wear, to meet the needs of different breeds of dogs.