I have numerous pocket knives, and switch them out from time to time. One I frequetly carry is comfortable in the pocket, an doesn't wear a couple holes in my jeans, as many do. It is surprisingly reasonable in cost as well, and the only improvement that could be made IMO, would be a regular carbon steel blade..
I am speaking of the Case 59L. Mine happens to be one brought out about 30 years ago, commemorating race car driver, Bill Elliott..
About 3 & 1/4 inches length overall.