Features - Color: Gray. - Material: Cotton. - Size S: About 20cm/7.87inch (Back) ; 32cm/12.59inch ( Bust )23cm/9.06inch ( Neck circumference ) - Size M: About 25cm/9.84inch (Back) ; 37cm/14.57inch ( Bust )26cm/10.24inch ( Neck circumference ) - Size L: About 30cm/11.81inch (Back) ; 42cm/16.53inch ( Bust )29cm/11.42inch ( Neck circumference ) - Size XL: About 35cm/13.78inch (Back) ; 47cm/18.5inch ( Bust )32cm/12.59inch ( Neck circumference ) - Size XXL: About 40cm/15.75inch (Back) ; 52cm/20.47inch ( Bust )35cm/13.78inch ( Neck circumference ) - Large area of gray fabric is not easy to get dirty. - Keep your dog clean and reduce the frequency of bathing. - When you measure your dog's bust and back length, don't be too tight. - When measuring the chest circumference of small dogs, you can relax one centimeter, two to three centimeters for medium-sized dogs, and two centimeters for long-haired dogs to ensure that the dogs are comfortable to wear.