Designed by noted personal-defense expert Michael Janich, the Spyderco YoJumbo is an “upsized” version of his time-tested Yojimbo™ 2. In this elite Sprint Run expression of it, the knife’s stunning, satin-finished Wharncliffe blade is supercharged with CPM S90V—a vanadium rich powder metallurgy stainless steel that offers an exceptional combination of edge holding and corrosion resistance. Its handle is also enhanced with handsome peel-ply-textured solid carbon fiber scales. All other features, including its nested stainless steel liners, high-strength Compression Lock®, and four-position pocket clip are consistent with the standard version of this model.