Warm reminder - XS-XL fits small dogs, 2XL-4XL fits medium and large dogs. The chest size of 2XL is 64 cm. Please refer to the size chart before purchasing, measure your dog's chest circumference and add 2-4 cm to choose the size. If you are unsure, provide your pet's chest, back, and neck measurements and we will help you. We always take responsibility towards our customers. Easy to put on - This dog jacket has a high-quality resin zipper on the back that does not scratch or wear easily, and the large zipper makes it easy to put on and take off. Comfortable and versatile - The back strap design is reflective and adjustable, and can be connected to various dog leashes. You don't need to buy an extra chest strap, but can use them together as a set. Waterproof - The dog jacket is made of waterproof fabric with good wear resistance and is suitable for rainy days. The inside is made of composite fleece which is warm and comfortable, and your pet will not feel heavy thanks to the exquisite craftsmanship and moderate thickness. Windproof - The retractable high collar effectively protects against wind. The elastic belly design provides a better fit and keeps warm. The reflective strip on the back effectively ensures the safety of dogs walked at night.