Size: XS= Back length 20 cm, chest circumference 32 cm, weight 1.5KG S= Back length 25cm, chest circumference 37cm, weight 1.5-2.5KG M= Back length 30 cm, chest circumference 42 cm, weight 2.5-4KG L= Back length 35cm, chest circumference 47cm, weight 4-5.5KG XL= Back length 38 cm, chest circumference 52 cm, weight 5.5-7.5KG Applicable season: Autumn and winter Features: Soft, comfortable, warm, stylish, easy to clean Style: Open button shirt, two-legged clothes Note: Manual measurements have an error of 2-3 cm