Nothing Fancy here but a great option for those looking to keep their blades safe during transport or storage. The micro-fiber padding on the inside will keep these guards from damaging your knives but make sure to keep them dry and clean especially if you're storing a carbon steel knife in them. The sizes specify the longest knife that will fit in the guard, so the 135 mm guard will properly fit a 135 mm knife, the 200 mm guard will fit knives up to 200 mm and so on. If you have questions about sizing feel free to use the chat feature on our site or send us an email.