Winnie the Pooh Freeze Vest Three Arrows 3L (Size 3 Long) Neck: 29-31cm Chest: 41-43cm Length: 31-33cm I bought this when my dog was 4-5 months old and weighed about 5kg, but she grew quickly and only wore it a few times. The inside is fleece, so it's thin but warm and easy to move in. Because it's 3L (Size 3 Long), it's perfect for dachshunds or those looking for clothes that cover the rear for winter. My dog is a Cavalier. It was nice that it covered her rear for winter.