Medium Size - The adjustment of this medium size is from 16 inches to 23 inches,suitable for adult medium breeds or young large dogs Powerful Reflective - The effective reflection is stitched on the edge of the whole aztec dog harness. That can provide a good vision in darkness to protect your dog's safety Mesh Padded - The inside of this plaid dog harness is padded with well breathable mess, and this leads a comfortable cushion while walking, running, training or pulling Extremely Durable - The outside of the dog vest is made of waterproof Oxford cloth, and it's super durable and wear-resistant Additional Tag Ring - On the dog vest harness,there is a ring designed for dog tag attaching. Please following the instruction in our description to use this dog harness