The comfort dog harness is designed to be like a second skin for your pup. The four straps can be finely adjusted to fit your dog's body shape, and it is easy to use as it can be detached with just one buckle. The side that comes into contact with the skin is made of high-density air mesh material, so it has excellent cushioning and breathability, and naturally is comfortable to wear. * Please note: this harness is best suited for dogs around 4-40lbs. If you have any questions on sizing, do not hesitate to reach out to us directly for assistance! *