This puffer is perfect for the spring or summer. With the long strips of velcro, your dog has plenty of room to grow and it will still fit! It also has zipper for harness clip. total length, not including collar: 11. 5 inches chest diameter, velcro closed: 16 inches neck diameter, velcro closed: 12 inches neck velcro: 3.5 inches chest velcro: 4.5 inches Automatic 30% off all bundles of 3 or more. Offers welcome. Ships same day/next day. Questions? Leave a comment below!