Keep your pet safe and yourself stress free. Sturdy Print Mountain Choke Collars engineered from the Swiss Alps. This mountaineering rope is strong, durable light weight for your dogs comfort. The MFR. suggests this is perfect for a dog with a neck size 2" smaller than the choke collar size. Please measure your dogs neck carefully and add 2" for comfort. Example. If your Dog has a 10" neck; you'll need a 12" collar.