When five strands of low-stretch poly fibers are expertly woven around a solid braided core, you get a calf rope that offers lightning-fast speed and snap, similar to a viper’s strike. Rattler Rope's Viper Calf Rope delivers exceptional consistency and minimal stretch, setting it apart as one of the top calf ropes on the market. Combining the familiar feel of polygrass with the unmatched strength and stability of CoreTech, it provides deadly accuracy with every throw. Similar in feel to the Striker, but slightly smaller in your hand, this rope is available in 28' lengths and sizes 9.0, 9.5, 10.0, 10.25, and 10.5.