Combining the features of the Red Dingo reflective collar for added protection with the functionality of a Red Dingo martingale collar! Red Dingo has designed a fantastic range of dog reflective dog collars and reflective dog leads! The dog collars, made from tough high density nylon are very hardwearing while being extremely fashionable. All of the Red Dingo martingale collars features the functionality of the traditional martingale collar which is used to keeps dogs from backing out of their collar. The martingale collar is also know as the semi-choke collar. The collars embrace great design without compromising on functionality or strength. Red Dingo is an Australian company that has put together a wide variety of Dog leads, Dog collars and Dog ID tags to suit all kinds of canine customers. Big or small, dark or ginger there"s something for every fur coat. All the Red Dingo products are strength and safety tested to the highest quality standard in manufacturing terms, embracing design without ever compromising functionality.Red Dingo Martingale Collar Sizing and WidthSmall (8"-13" Neck) and 1/2" wideMedium (12"-18" Neck) and 3/4" wideLarge (16"-24" Neck) and 1" wide