Instruction: New Style Dog Winter Jacket with Waterproof Warm Polyester Filling Fabric, Pet keep warm Jackets, Dogs Warm Coat Outdoor Jacket Waterproof Raincoat with Reflective Trim and Leash Slot for Cold Weather, Autumn/Winter Features: This jacket is made of water-repellent fabric with a breathable lining, protecting your puppy from rain and keeping him/her warm for winter walks. Made of soft Lycra material, the neck portion is adjustable to fit more dogs with various neck sizes. The reflective trims help you keep an eye on your dog at night or in low-light visibility environments, ensuring your dog's safety. Easy lead attachment: Just behind the neck area is a convenient slot for the leash to go through. You can easily attach a leach to a harness or collar. The buckle on the stomach makes the jacket adjustable to fit the dog's body perfectly and super easy to put on/take off. Specifications: Material: Polyester, Lycra, breathable lining Size: S Length 13.7in / Girth 15.7in~27.5in / Neck 21in M Length 16in /Girth 18~31.5in /Neck 22in L Length 18in /Girth 18~33.5in /Neck 24in XL Length 19.7in /Girth 19.7~35.4in /Neck 26in 2XL Length 22in/Girth 22~37.4in /Neck 28in *Please double check the size chart before you buy the jacket. Thank you! 1 pc in 1 PE bag How to measure the dog size? Chest: measure the thickest part of the chest, add 2-3CM (1 inch) will be better. (Usually behind the two legs) Length: Make sure your dog stands properly, not sitting or lying. Measure along the dog's backbone from the base of the neck to 5CM (2 inch) front the base of the tail. Neck: the girth of the neck, add 2-3CM (1 inch) will be better. Note: If your dog is a large chest, long hair, or at the high end of the size, you may order the next larger size to ensure a comfortable fit.