Product Name: Pet Cotton Coat Material: Polyester+Tarpaulin+Lambswool Blue Color Specifications: M chest circumference: 40 x m, back length: 24cm Chest: Measure the widest circumference of the dog’s chest, reserving 2-3cm for the measured girth Back length: the length from the neck to the base of the tail, the measured girth is reserved for 2 ~3cm Neck Circumference: Measure the circumference of the dog’s neck and reserve 2-3 cm for the measured circumference