Also includes Cold Steel's new integrated opening system. The WAVE feature is simple in form yet impressive in function - a small protrusion above the blade tang which when the knife is pulled from the pocket catches on the pocket edge and rotates the blade into the open position - locked and ready for safe use. It sounds complex but it all happens very simply indeed in just a fraction of a second, or as quickly as you can draw the knife from your pocket. Made in Seki City, Japan.