Even in the most extreme weather, the Goo-eez Hooded Signature Winter Jacket will keep your dog warm and cozy. Superior insulation is provided by the water-resistant shell and plush interior lining. Our proprietary elastomer gel and specially weaved rib fabric underbelly ensure a tight fit that keeps warm air in and cold air out. The flexible underbelly is waterproof, can strecth up to 2 x making it super easy to put on and take off, and does not irritate the skin.