The technical quick release martingale collar is a gentle alternative to traditional choke chain collars. great for training or dogs that like to back out of collars, the limited slip action prevents over correcting and choking. made from extra soft climbing grade tubular webbing and features an additional d-ring to attach id tags. the quick release side buckle makes putting on and taking off quick and easy, eliminating the need to adjust the slide for proper fit every time. available in a variety of vibrant colors and sizes x-small to x-large. size small fits a neck size of 10-16-Inch.