Made of acrylic fiber, stretchy and soft to touch Machine washable Flexible and easy to put on, keeps your baby warm and cozy, skin-friendly Stylish, the multi-colored thread in our color block dog knitwear collection add more color fun to the dreary winter Please priority follow the chest size. Size XL: Chest 20 inch, Neck 18 inch, Back 18 inch, suitable for medium dog Product Name: Dog Fall Sweater Brand: DELIFUR Materials: Acrylic Fiber Color: Pink and Orange Size: S-2XL Occasions: Fall, Winter, Holiday Size ChartSize S: Chest 13 inch, Neck 9 inch, Back 11 inch, suitable for cat.Size M: Chest 15 inch, Neck 10 inch, Back 13 inch, suitable for small dog.Size L: Chest 19 inch, Neck 15 inch, Back 15 inch, suitable for small dog.Size XL: Chest 20 inch, Neck 18 inch, Back 18 inch, suitable for medium dog.Size 2XL: Chest 24 inch, Neck 21 inch, Back 20 inch, suitable for medium dog. SIZING NOTE-Please don't choose the size based on your usual size, measure your pet's chest girth in priority, and back length, get the right size based on DELIFUR size chart. If your pet is still growing, or your pet has a stout body, please do size up.