Cowboy Cordage 3 Strand Syngrass Treated Calf RopeCowboy Cordage 3 Strand Syngrass Treated Calf Rope Length 28 foot 3 Strand Syngrass Manila ropes have the look and feel of the old time grass ropes, but are made from modern engineered synthetic materials. They also have a lead core in 2 of its 3 strands. This is a durable rope that requires little maintenance, and has little to no stretch.