Functions: 1. The sweater is designed for cats and small dogs, please measure your pets correctly and check the size chart before shopping. 2.The puppy winter sweater is made of comfortable acrylic fabric, so your pets will feel comfortable wearing it. 3. Lightweight and foldable, perfect for everyday use and storage. Machine washable, but best to wash by hand. Size: X-Small- Neck circumference: 7.1-8.7/18-22 cm, Chest circumference: 10.2-11.8/26-30 cm , Back Length: 7.9-9.1/20 -23cm, Suggested Pet Weight: 2.5lbs-4.5lbs. Small Neck: 8.7-9.8/22-25cm, Bust: 11-13/28-33cm, Back Length: 9.8-11.8/ 25-30 cm, suggest pet weight 4.5-6.5 lbs. Average neck circumference: 9.1-11/23-28 cm, chest circumference: 11.8-14.2/30-36 cm, back length: 11.8-13.8/30 -35 cm, suggested pet weight 6.5 lbs-9 lbs. Large Neck: 9.4-11.4/24-29cm, Bust: 12.6-15.7/32-40cm, Back Length: 14.2-15.7 /36-40 cm, suggested pet weight 9 lbs-13 lbs. Please leave enough space to slip two fingers between the measuring tape and