The Slim series (a.k.a Effilés in French) are elegant and highly ergonomic. The No.12 makes a great table knives while the No15 is use to fillet fish on the go. All slim knives have a narrow flexible blade, the smallest ones are great to cut fruits and vegetable and the larger ones fillet fish. Please keep in mind that the Slim knives have a slightly flexible blade and are not designed to be use for heavy duty task.