The Pet Life Heavy Knitted Dog Sweater is composed of Soft-Heavy Knitted Cotton. Very comfortable and can be worn any time of year. This pet sweater features a Leash-Slit Holder behind the Neck area. Available in Multiple Sizes and Colors.Sizing Guide: From Back of Neck to Tail area ("In" Inches) 8" : EXTRA SMALL 10-12": SMALL 14-16": MEDIUM Features: Breathable Pet Intended For: Dog Base Material: 80% Cotton, 20% Polyester Care: Machine Wash, Tumble Dry Country of Origin: Imported