The RetrieverWorx retriever training check cords are made of soft polyester so they&';re easy on your hands. These cords wont knot up and snag and on brush. They also float on water so they wont get hung up on the bottom of your retriever training ponds. These cords are lightweight, coil and carry easily. The orange cords are easier to find in the field. They are equipped with your choice of a heavy duty nickel or brass bolt snap. Cord is 30 ft.