1. The outer layer is made of waterproof capable material and the inner layer is made of super breathable mesh, the classic big dog clothes keep your lovely pet away from moisture and keep them dry. 2. The quick release/quick connect buckle at the waist can be adjusted according to the width of your dog's waist, and the elastic strip ensures the right position of the legs, allowing you to create a comfortable environment for your dog. 3. The raincoat is made of excellent PVC material, and the adjustable buttons on the raincoat provide high visibility and keep your pet's head dry on rainy days. 4. Please measure your pet's neck and chest circumference with a soft ruler before purchase, size information is from manual measurement, there may be errors. 5Size: S back length 20cm, chest circumference 32cm, neck circumference 23cm, reference weight 2.5-4 pounds M has a back length of 25cm, a chest circumference of 37cm, a neck circumference of 26cm, and a reference weight of 4-6 pounds L back length 30cm, chest circumference 42cm, neck circumference 29cm, reference weight 6-8.5 pounds XL back length 35cm, chest circumference 47cm, neck circumference 32cm, reference weight 8.5-12 pounds