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, tell us your pet's chest, back, and neck measurements and we will help you. We always take responsibility for our customers. Easy to put on - This dog jacket has a high-quality resin zipper on the back, which does not scratch or wear easily, and the large zipper is also easy to put on and take off. Comfortable and versatile - The back strap design is reflective and adjustable, can be connected to various dog leashes, you don't need to buy extra chest straps, you can use them together as a set. Waterproof - The dog jacket is made of waterproof fabric, which has good wear resistance and is suitable for rainy days. The inside is made of composite fleece fabric, 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 fits the body better and keeps it warm. The reflective strip on the back effectively ensures the safety of dogs walking at night.