Polybutylene terephthalate, otherwise known as PBT, has long been considered the best material for keycaps in the mech keys world—and for good reason. For one, it’s much more durable than ABS plastic, which makes it more resistant to heat and chemicals. It also will resist the shine from oils on the fingers that accumulates over time. This set of keycaps, available in four different colorways, is a great way to deck out your favorite board in style. It comes with a host of additional keys—for a grand total of 129—giving you enough caps for unique layouts.