Combining the convenience of an adjustable collar with the control of a choke action, the No Slip collar is ideal for training and for dogs who easily slip their collars. Safer to use than a choke chain, the limited closure feature on the No Slip guarantees that this collar will not injure your pet! Manufactured from high quality 3/4" nylon that has been specially processed to prevent fraying and increase strength, this collar adjusts from 14" up to 20" and is suitable for medium to average size dogs.