NACOCO Rudolph The Red Nosed Reindeer Sweater Pet Holiday Clothes Cat Sweater Dog Sweater Winter Clothing Teddy Poodle Autumn Winter Clothes Dog Clothes This is a two legs sweater. Please pay attention to measure the chest circumference of your pet. Size XX-Small: Back lenth 8.7 in; Chest circumference 10.2 in; Neck circumference 7.1 in. Size X-Small: Back length 9.8 inches Chest circumference 10.2 inchesNeck circumference 8.7 inches Size Small: Back length 11.8 inches, Chest circumference 13.4 inches, Neck circumference 9.4 inches Size Medium: Back length 14.2 inches, Chest circumference 15.7 inches, Neck circumference 10.2 inches Size Large: Back length 16.9 inches, Chest circumference 18.1 inchesNeck circumference 11 inches