Their white MBK keycap offering feels similar to their classic MBK Legends keycaps, while the MBK (PU) keycaps have a polyurethane coating similar to the MBK Glow keycaps. If you're looking to build a keycap set for a custom board, you can drag and drop keys to build your custom layout. I created a few keys with the existing MBK Legend set, as well as a few keys with custom vector designs from .svg files I uploaded.