DURABLE PBT – The Keys are made with a Dye Sub process and from extra thick PBT for great readability and pleasant touch. The material is extra durable to increase longevity and make the Caps fade resistant. CHERRY PROFILE – Ideal for long uninterrupted typing without feeling tired. Cherry Keycaps have a smaller form factor compared to OEM Keycaps leading to less stretch in the fingers and a more comfortable experience. EXTRA KEYS – The Keyset includes an additional 31 Keys for high compatibility including Mac modifiers and a Keypuller for easy Keycap removal. FITS MULTIPLE SIZES – The keycap Set has 139 included Keys and is compatible with 100%, 75%, 65% and 60% form factor Keyboards and is compatible with ANSI US Layout as well as the ISO UK Layout. HIGH COMPATIBILITY – The keycaps are widely compatible with Cherry Mx Switches, Gateron Switches, Kailh Box Switches and Outemu mechanical gaming switches.