I carry a Gerber LST with 1.75 inch blade. It is extremely light (16 grams or 0.6 ounces), the plastic handle is big and square-edged and knurled for a good grip, and the blade locks open securely for safe operation. The blade is long enough for my common tasks of cutting packaging and food, and it could also whittle an improvised tent stake or whatever. It is reasonably priced, $17 on Amazon.