Mechanical keyboards themselves are something of a throwback to an earlier era. Decades ago, all keyboards were mechanical, and they tended to have very high-quality keycaps. You’ve probably seen old keyboards and typewriters with tall, shiny keycaps. That style is very “in” again thanks to the popular SA keycap profile. These retro-style caps are made by just two manufacturers right now, and the production queues can be brutally long. Still, people snap up SA keysets every time they go on sale.