In the 1980’s, the original Spyderco Endura blazed a trail as one of the first lightweight clip-carry folding knives. Today it remains one of our most popular models and continues to set the standard for all other knives of its breed. Now in its fourth generation, it has also inspired a broad range of variations to meet virtually every user’s needs and preferences. All Endura 4 Lightweights are distinguished by their skeletonized stainless steel liners and injection-molded fiberglass-reinforced-nylon (FRN) handles. This specific version of the design features CPM SPY27 a purpose designed blade material that offers an exceptional balance of edge retention, toughness, corrosion resistance, and ease of sharpening. The blade is satin finished plain edge that is paired with a cobalt blue FRN handle.