Sportz-Vibe is a lightweight portable massage blanket designed to help boost circulation in dogs. It can be used for high performance dogs as a warm up or recovery blanket to help ease soreness and stiffness after long work-outs or can be used on dogs of all ages that may be suffering from back problems or hip conditions. The Sportz-Vibe massage blanket for dogs helps to increase circulation to your dog's back and hips. The increase in blood flow makes tendons and ligaments more elastic and helps bring oxygen and nutrients to the area. Massage also helps to reduce inflammation by stimulating the lymphatic system to remove toxins. To determine sizing see photo of sizing chart. Sizing chart is in cm. NOTE: sizes may vary within 1".