Escape Free Sport Dog Harnesses for Small Dogs – Gooby Escape Free Sport Harness is made for small breed dogs. This means that our largest size will fit a dog up to 35 lbs. In order to fully utilize the functionality of the dog harness, as well as the fit, we recommend measuring the largest part of the dog’s chest. Escape Free Dog Harness Design – The Gooby Escape Free harness reduces the space around the back making harder for your dog to escape the dog harness by backing away during the walk. MAKE SURE THE GOOBY SPORT HARNESS IS PROPERLY SIZED BY CHECKING TO SEE IF THERE IS NO SPACE AROUND THE BACK OF YOUR DOG WHEN THE HARNESS IS PULLED FULLY. INCORRECT SIZING WILL LEAD TO ESCAPING OF THE HARNESS. Neoprene Padded – The lightweight soft neoprene material and webbed polyester straps ensures durability and keep your pup comfortable. Neoprene material hugs the puppy harness softly reducing the abrasions caused by other harnesses with rougher material