展开Ruffwears Chain Reaction Collar is a martingale collar that combines reflective Tubelok webbing and a short section of stainless steel chain. The limited-cinch martingale design is popular among dogs who have a knack for slipping out of traditional collars. Packed full of Ruffwears signature collar features: a separate ID tag attachment point, a silicone tag silencer, and strong and comfortable webbing that holds its color.