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. Size Chart Please do measure the size of your dogs and compare to the size chart below or in the pictures. (XS) Back Length: 46CM / 18.11" inch (M) Back Length: 51CM / 20.07" inch (M) Back Length: 56CM / 22.04" inch (L) Back Length: 61CM / 24.01" inch (XL) Back Length: 66CM / 25.98" inch (XXL) Back Length: 71CM / 27.95" inch (XXXL) Back Length: 76CM / 29.92" inch WARM TIPS: Machine wash cold with like colors. Do not bleach. Tumble dry low. Do not iron. About Morezi Morezi brand is a company specialized in pet supplies. With the high quality of workmanships and materials, we hope that pet owners and pets will enjoy a leisure time. We will try our best to improve our services, as customer satisfaction is at the core of our business.