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The SDG 1/2-inch Biothane Check Cord is a training lead made from Biothane — a waterproof, easy-to-clean synthetic material that handles field conditions, mud, water, and repeated use without the rot, stiffness, and weight issues of traditional cotton or nylon rope check cords. The 1/2-inch width is the standard size for retriever training check cords — heavy enough for control on medium to large breeds, light enough to run through the handler's hands smoothly without rope burns. Built for the conditions retriever training actually happens in.
