Inspired by Sal Glesser's original RockJumper design, the LeafJumper is mid-sized, back lock folding knife with wide, ergonomic handle and versatile leaf-shaped blade. This elite expression of it supercharges the design with Uddeholm's K390 MICROCLEAN blade steel. state-of-the-art tool steel created to withstand the rigors of industrial cutting, blanking, and punching operations, K390 offers exceptional strength and edge retention when used in knife blades. The K390 LeafJumper is available in both PlainEdge and fully serrated SpyderEdge configurations and its Bi-Directional Textured fiberglass-reinforced-nylon (FRN) handle is molded in the distinctive blue color reserved for Spyderco's elite K390 family of knives.