YAP Technology Dog Harness Wrap - Reversible Blue/White (All Sizes) Feature NASA'sOutlastmaterial - designed to retain your dog's body heat when it is cold out, and expel excess heat when it is hot. Emergency handle is designed so that you can pick up your dog quickly and with no discomfort to your dog or yourself. The rear lead ring allows the dog to be on a leash with maximum comfort and owner's complete control. Available in a variety of sizes and colors. Can be adjusted in size at your dog's mid-section as well as your dog's neck.