The 815 Double Helix folder is the knife for you if you enjoy knives that are different from the norm. This is the first We knife that not only locks in the open position but also the closed position for extra safe pocket carry. This is due to its patented Slide Lock design, best described as an AXIS lock in the way it looks and functions. You grab the knobs on each side of the frame and pull back toward the butt end and the blade is now free to be flicked open with a little wrist action. You'll pick it up pretty quickly and the ceramic bearing pivot allows the blade to glide open smoothly. The straight handle profile makes for a comfortable knife when performing hard use cutting tasks and the build quality is absolutely phenomenal. The Double Helix is an interesting look with one-of-a-kind functionality which makes it exactly our kind of knife.