Dye-Sub PBT Retro Vibe. Made of highly durable PBT plastic and featuring dye-sublimated legends, this keycap set can withstand even the toughest users. Fully compatible with MX mechanical switches, it’s a great fit for today’s boards. With its ultra-durable dye-sublimated legends on the PBT plastic, these keycaps will never shine or wear out with these legends that can last a lifetime. The Dye-sub PBT construction even provides superior durability and feel. For More details Click Here