LEAFJUMPER™ K390

Inspired by Sal Glesser’s original RockJumper™ design, the LeafJumper™ is a mid-sized, back lock folding knife with a wide, ergonomic handle and a versatile leaf-shaped blade. This elite expression of it supercharges the design with Böhler-Uddeholm’s K390 MICROCLEAN® blade steel. A 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. Its lightweight fiberglass-reinforced-nylon (FRN) handle is molded in the distinctive blue color reserved for Spyderco’s elite K390 family of knives. The handle’s construction includes nested, skeletonized stainless steel liners, a sturdy back lock mechanism, a high-traction Bi-Directional Texture™ pattern, and a fully configurable four-position pocket clip that supports all carry preferences.

LEAFJUMPER™ K390 Specification