Gerber knives have stainless steel blades, which hold an edge for longer than standard models. Being harder, they take a little more work when they do need sharpening, but like all blades, it’s not difficult once you get comfortable with the technique. There are numerous helpful videos online. It’s also easier if you do it regularly, rather than letting it get dull. Serrated blades require a different tool (mentioned above). Gerber provides a resharpening service, though, of course, that means being without your knife for a period. Also, they don’t resharpen serrated models.