S size: head circumference 24-40cm, length 14cm Size M: head circumference 30-50cm, length 18cm L size: head circumference 45-75cm, length 25cm Please choose the right size for your dog before purchase Feature: Calm Upset & Release AnixietyIts gentle compression design reduces noise that irritates pets. The warm, full-wrap design has a swaddling effect that calms, comforts and protects pets, making them feel safe and stable. Perfect for use in cars, airports, noisy environments with dogs and to protect them from loud sounds like thunder and fireworks. Soft & FlexibleHigh quality soft and gentle fabric with high stretch, so your dog will be comfortable and easy to put on and take off.- Grooming HelperIt is perfect for use during bathing, hair blowing and toenail clipping. Keep your pup calm and release stress while brushing at the grooming salon. With this hoodie on, both dog and groomer will feel safer and the owner can settle in nicely for the grooming process. Even your sensitive pup will be impressed with this stress relieving dog ear cover.- Ear & Neck WarmerDog earmuffs keep your pet's neck and ears warm and protected from dust and cold winds. Perfect for your dog to wear on hiking and camping trips and other outdoor activities in winter or cold weather.