How it works - The Earmuff Protector reduces anxiety by shielding the dog’s ear canal from loud noise and creating a gentle compression around the dog’s head to calm anxiety.  Suitable for indoor & outdoor use - Useful for reducing anxiety at home, grooming, at the vet, during car rides, vacuuming, construction, thunderstorm, any situation that your dog may get anxious. How to Use - Place the dog’s ears down so the ear canals are not exposed, then fasten the head wrap with toggle.  Great for Winter - The Earmuff Protector will also keep your dog’s ears and neck warm during cold winter months.  Soft & High Quality - Made with premium Dralon velvet fabric, soft, stretchy, durable and adjustable Care - Machine wash cold, line dry, measure based on your dog’s head circumference.  Boxer model is 35kg/77lbs wearing size LFrench Bulldog model is 9kg/20Mbs wearing size MDoberman model is 30kg/66lbs wearing size L