These Comfort Wrap Adjustable Pet Harnesses from Coastal are 5/16" thick and adjust from 8" to 14" in girth, giving you maximum control over your pet and their movement. No more attaching leads to your dog's neck and risking injuring them or allowing them to injure themselves with sharp jerks. The Coastal Comfort Wrap Dog Harnesses will allow you to walk your dog in safety, comfort, and style!