Need a hand with sizing? Click here to send us a message! We aim to get back to you within 60 minutes. SAFE & SECURE, our harnesses are durable and have a robust hard plastic buckle with side release which is secured with heavy duty stitching. The harness can be used in your car with a dog seatbelt. COMFORTABLE, the harness is adjustable at both the neck and chest, allowing a custom fit for your dog or puppy. The thick padded material is soft and snug and the vest style harness hugs your pet, guaranteeing that a nervous dog feels safe. NON RESTRICTIVE, all Woofles dog accessories are non-restrictive and approved by veterinarians and canine physiotherapy professionals.