Majestic Pet Clothes Winter Big Dog Clothes Night Reflective Pet Clothing 1. Let's measure and buy the correct size: Neck: Measure around your dog's neck, leaving room for two fingers. Chest: The most important measurement; measure your dog's chest at its widest point. Add 2 inches for comfort. If your pet is between two sizes, we recommend ordering the larger of the two sizes. 2. Give Your Dog a Warm Winter: Waterproof surface, soft and warm fleece padding and thick cotton inner layer keep your pet warm in winter. Even in heavy snow, cold wind, it still keeps your dog warm and comfortable. Lightweight suit for everyday wear3. KEEP YOUR DOG SAFE IN THE DARK: Large reflective elements will stand out in the dark, keep your dog safe at night. 4. Belly button design, easy to put on and take off. The bottom button can be adjusted to better fit your dog. The belly is designed not to interfere with your dog's urination. Machine washable. S Length 20 Bust 35-40 Collar 25-30 Reference Weight 2-3.5KG M length 30 bust 40-50 collar 30-35 reference weight 4-7KG L Length 40 Bust 50-60 Collar 35-40 Reference Weight 8-14KG