The heart of the ARK is its deeply curved clip-point blade ground from H-1 steel. The curved edge and deep hollow grind ensure exceptional edge geometry and pack as much edge length as possible into the compact blade. Spyderco decided to invest in the tooling to mold a fiberglass-reinforced nylon (FRN) handle directly onto the blades tang. An FRN handle allowed the use of Spydercos proven Bi-Directional Texturing pattern, which provides unparalleled grip control even when wet. To ensure convenient, universal carry with any style of clothing (including none at all) the logical choice was to equip the ARK with a neck sheath supports the weight of the knife and resists the force of a rapid drawstroke, but cannot be turned against the wearer as a choking weapon like the paracord lanyards found on many neck knives. Overall length measures 4.98 with blade length 2.50.