There are 5 sizes available: XS SIZE: back length 9", neck girth 8-10", chest girth 12- 14"; SMALL SIZE: back length 12", neck girth 10-12", chest girth 14- 16"; MEDIUM SIZE: back length 14", neck girth 12-14", chest girth 16- 18"; LARGE SIZE: back length 16", neck girth 14-16", chest girth 18- 20"; XLARGE SIZE:back length 20", neck girth 20", chest girth 22- 26" . PERFECT FOR Christmas or New Year party special occasions! This sweater with classic Red white color,looks so handsome,So cute.DESIGN:Turtleneck knitted, Embroidery Snowflake, easy on and off in pullover design, decorated with bow tie.Super cute clothes Party theme dog sweater. SUPER SOFT MATERIAL: Made of 100% acrylic, the softest and comfiest pet sweater,stretchy & lightweight. This is absolutely adorable costume for your pets, such as:Yorkie, Toy Poodle, Chihuahua, Maltese and other medium large pets.