NACOCO Pet Reindeer Hoodies Dog Christmas Suit Dog Elk Hoodies Dog Birthday Clothes Four legs dog costumes, please pay attention to measure the chest circumference and back length of the dogGet a super adorable elk costume for your dog,Be Suitable for Chrismas day Halloween, birthday party,and etc Size X-SmallBack length 9.8 inches Chest length 15 inches Neck length 9.1 inches Size Small: Back length 11.8 inches Chest length 16.5 inches Neck 10.2 inches Size Mediume: Back length 13.8 inches Chest length 18.1 inches Neck 11.4 inches Size Large: Back length 15.7 inches Chest length 21.3 inches Neck 12.6 inches