Size: M/L Color: Silver x Black Brand: PetSafe Closure Type: Buckle Item Weight: 0.61 pounds Care Instructions: Hand Wash Only A training harness developed by PetSafe, an American manufacturer. It naturally curbs a dog's tendency to pull, allowing you to teach a leader walk without putting a strain on them. By attaching the leash to the front of the chest, it becomes more difficult for the dog to go ahead of the owner. When the leash is pulled, the martingale loop tightens, weakening the dog's forward momentum. Even when the leash is pulled, it doesn't choke the dog, allowing for training without putting a strain on them. Size: 【M/L】Chest circumference approx. 33-41cm, Girth approx. 63-84cm / Chest circumference is measured from "the base of one front leg to the base of the other front leg", and girth is measured around "the thickest part of the chest, under the dog's armpits". Stored in the original box. Will be shipped without the original box.