This harness is made to break the rules! This harness fits your dog's body perfectly. It is super comfortable and adjusts both at the neck and chest of your furry friend. The fabric is neoprene on the outside and breathable mesh on the inside, so your dog feels extremely comfortable and safe. -Super comfortable and adjustable at the neck and chest. -Neoprene fabric and breathable mesh for your dog's comfort. -Reflective bands on the neoprene fabric. -Check out the entire Grunge collection here! For some dogs, this harness may fit looser in the chest than the Reversible Harness. If your dog has a narrow chest, a smaller size might fit well.