The Help Em Up Harness represents a breakthrough for Orthopedic Surgeons, Veterinarians, Vet Techs, Therapists, or anyone else who is lifting dogs on a daily basis, because you cant help them if doing so is hurting YOU! The harness provides a way to provide better care for dogs recovering from injuries or surgery -- simply by reducing the chances of re-injury during recuperation. This is the best fit for all female dogs and the majority of male dogs. The unique design lifts the dogs mass from below, beneath the chest and pelvis, distributing weight over large padded surfaces. The chest and back panels are lined with new air flow materials and perforated neoprene to keep the harness as cool and comfortable as possible. Straps are also covered with neoprene sleeves and areas of most friction are covered with super soft micro fleece. Use only on dogs as an aide in lifting or restraining. The dog harness will need to be adjusted to properly fit each dog’s dimensions. Follow dog harness sizing instructions and refer to our diagram. Do not leave on a dog for over-extended periods of time, use it as needed and then take it off. Loosen straps especially if your dog wants to lie down in it, to help prevent hot spots, any chaffing or overheating with sensitive skin. Take the dog harness off at night and let your dog sleep without it. Use proper care and clean regularly. Neck: 12-26 inches Chest 16-36 inches Waist 15-26 inches. Visit http://helpemup.com/about/ for further info.