Gerber - Zilch Series Folding Knife 31-004071 

Since pocket space is limited, it's essential to optimize every nook and cranny when designing a knife for everyday use. That's where the Zilch comes in: a lightweight folding knife designed to slip easily into a pocket and be forgotten.

Its slimness does not equate to minimalist design; it has exposed barrels, an original blade back and offers the possibility of customizing its opening.