Suitable size for puppies such as Labrador, Collie, Springer, Welsh Corgi, Pomeranian, etc. You'd better determine your dog's bust by measuring the widest part of your dog before buying your dog the chest (be sure to leave 2-3cm)Pull-Free Design and Better Control: Our dog harness comes with 2 zinc alloy loops on the dog's chest and back, when your dog pulls, you can attach the chest loop to control your dog, and when you are with your dog You can use the back loop when your four-legged friends are walking together, no pressure on the dog's neck, no suffocation, ideal solution for pulling the dogSAFE AND MORE COMFORTABLE: Nylon webbing with reflective material for good visibility during night runs; a sturdy handle on the back for threading the harness through while you're in the car to protect your dog; breathable mesh lining Soft foam pads for puppy harnesses prevent injuries and provide extra comfort and protectionEASY TO DONATE AND ADJUST: This dog vest harness is easy to don and adjust, quick snaps ensure ease of use when donning and doffing, fully adjustable straps on the chest and neck allow for a custom fit for your fur friend, perfect for everyday walks , running, jogging, hiking, training, outdoor recreation time, etc.