ThunderShirt uses gentle hugging to calm your dog.
With its patented design, ThunderShirts gentle, constant pressure has a dramatic calming effect for most dogs and cats if they are anxious, fearful or overexcited. ThunderShirt is already helping hundreds of thousands of dogs and cats around the world. How does ThunderShirt work? Pressure on the body has been known to have a calming effect on the nervous system, possibly by releasing a calming hormone like endorphins. Using pressure to relieve anxiety in people and animals has been a common practice for years. ThunderShirt has been developed to be very easy to put on. Just lay it over your dog's back and secure with the chest and torso straps. The fasteners make ThunderShirt very adjustable to many different body shapes.
Size XXS: Chest size: 9" - 13" - less than 7 lb.
SIZE XS: Chest size: 13" - 17" - 8-14 lbs.
SIZE S: Chest size: 17" - 21" - 15-25 lbs.
SIZE M: Chest size: 21" - 25" - 26-40 lbs.
SIZE L: Chest size: 25" - 30" - 41-64 lbs.
SIZE XL: Chest size: 30" - 37" - 65 - 110 lbs.
SIZE XXL: Chest size: 37" - 50" - greater than 110 lbs.