Polyester and spandex, comfortable and durable, suitable for various occasions. Made from a combination of 90% polyester and 10% spandex, the vest offers several benefits: it's durable and hard-wearing, maintaining its shape after prolonged use; it offers excellent breathability, ensuring your dog doesn't feel stuffy or uncomfortable; and it's soft and lightweight, making it easy and comfortable. In addition to relieving anxiety, it can also be used as everyday outdoor wear for small, medium, and large dogs, offering both functionality and ease of use. Soft compression + warm design, relieves anxiety in various situations. The gentle compression provided by this vest effectively alleviates anxiety and worry caused by thunderstorms, fireworks, separation, vet visits, travel, or barking. The classic round neckline fits snugly against the neck to prevent chafing and discomfort, while providing essential warmth during cooler summer nights, relieving anxiety and ensuring comfort. Elastic material and Velcro make it easy to put on and take off for cleaning. The highly elastic fabric ensures the vest is easy to put on and take off without having to be forced over the dog's head. It's easy to put on and take off and doesn't get caught in dog hair. The extra-long, wide Velcro fastening at the waist allows for flexible adjustment to your dog's size, enabling a wide range of fits. Daily cleaning requires no special care and can be machine or hand washed. The vest dries easily after washing and is foldable for easy storage. High collar with multifunctional design provides sound insulation and warmth. The vest features an adjustable high collar that can also function as a scarf: rolled up, it provides extra protection for your dog's neck, and folded down, it can be used as a polo collar, suitable for both long and short necks. The pullover collar also acts as a \"quiet earmuff,\" dampening ambient sounds and protecting your dog's head from the cold, relieving anxiety in multiple ways. Available in various sizes, with purchasing advice for a perfect fit. The design is intended for dogs of various shapes and sizes, ensuring a snug and comfortable fit. Before purchasing, measure your dog's key measurements (such as chest circumference, back length, etc.) and refer to the size chart to make your selection. If your dog falls between two sizes or is a little heavier, it is advisable to choose a larger size for optimal comfort and good pressure distribution during use, and to prevent the user experience from being affected by an incorrect size.