The ThunderShirt Sport Dog Anxiety Jacket in size Large is an adjustable and stretchy vest made from gray polyester fabric. Designed for dogs weighing 26-40lbs, this vest is waterproof, warm, and features high visibility. Perfect for providing comfort and relief to anxious dogs, this ThunderShirt model is a trusted choice for pet owners looking to support their furry companions in stressful situations. Made in Vietnam, this high-quality jacket offers a snug fit and essential features for pet wellbeing.