Willard Ropes Treated Poly Calf Rope- WhiteWillard Ropes Treated Poly Calf Rope White 3 strand Cured & Treated 9. 5, 10. 0, 10. 25, 10. 5 Colors: White Another one of our most popular ropes this rope will not let you down in the arena! Constructed of three strands of poly with a lead core in two of the strands. They are treated and cured to get that feel that calf ropers demand. They are not affected by weather conditions and require minimal care.