Samson True Blue - 12 Strand - 1/2 in. Climbing rope is an all polyester climbing rope with high strength, low stretch, excellent abrasion resistance, and a long service life. Soft hand and good flexibility and knot holding abilities. Minimal to no milking and stays firm and round in use. True-Blue can also be used for light duty rigging applications. True-Blue braided climbing line is a unique combination of solution dyed blue polyester fiber wrapped over white polyester. The result is permanent color that won't fade or run, with high visibility in trees.