• Size M: chest circumference 16 inches, neck circumference 11 inches, back length 11 inches. Suitable for small dogs weighing 5 to 7 pounds. • Super warm and soft: soft, breathable, and stretchy fleece material to prevent static and protect sensitive skin. • Thoughtful design: D-ring on the back to attach to the dog leash, keeping the pet warm and controlled. • Reflective vest: reflective straps on the back, ideal for night walks and cold weather. • Easy to put on and take off: zipper on the back, making it easy to use.