The Styrka provides the perfect balance of control and efficiency making it ideal for MRS and SRS climbing techniques. The 11.5 mm Styrka is a double-braid rope featuring a burly polyester 24-strand sheath and a steam-stabilized braided nylon core; engineered to have decreased elongation, soft handling, and easy knotability. The smooth, durable sheath is designed to handle mechanical devices and run efficiently through hardware. The Styrkas high vis coloration can’t be missed up in the tree.