Cowboy Cordage 4 Strand Syngrass Treated Calf RopeCowboy Cordage 4 Strand Syngrass Treated Calf Rope Length 28 foot 4 Strand The Cowboy Cordage 4 strand Syngrass is built like the new Chaos line with a leaded center core. Syngrass Manila ropes have the look and feel of the old time grass ropes, but are made from modern engineered synthetic materials. This is a durable rope that requires little maintenance, and has little to no stretch.