Keep Your Puppy Warm And Cozy In This Adorable Bear Fleece Sweater - Perfect For Small, Medium, And Large Dogs! Please Note: 1. For a proper fit, please do measure the size of your pet and compare it to the chart below, then choose the size based on the chest measurement. 2. If your pet's measurements fall between two sizes, we recommend ordering the larger of the two sizes. 3. There is a 0.5-1 inch (1-3 cm) error in manual measurements. Individual wear may vary. This is only a suggested size guide.