As a preamble let's review the Cherry Profile PBT Keycaps for Mechanical Keyboard, also known as the 128 Keys Mahjong Keycap Set.
These keycaps are made of durable PBT material with a thickness of about 1.5mm and feature a ladder key layout that adapts to the natural typing movement of the human hand. The five-sided sublimation process ensures that the font is clear and not easily faded.

What distinguishes the Cherry Profile PBT Keycaps for Mechanical Keyboard is their stable molecular structure that makes them corrosion-resistant and heat-resistant. They are designed with cross universal holes making them easy to install and providing a tight fit to switches. The Mahjong theme adds a unique and interesting touch to any keyboard setup. Users have reported a good feeling and comfortable hand movement when typing with these keycaps.

The only real disadvantage is that the keycap set does not include keycaps for ISO requiring users to use their own enter key from another set. However, this is a minor inconvenience that does not detract from the overall quality of the product. The keycaps have received positive feedback for their high quality, stable fitting, and attractive appearance.

In my opinion the Cherry Profile PBT Keycaps for Mechanical Keyboard are an outstanding choice for anyone looking to upgrade their keyboard. The PBT material and ladder key layout provide a durable and comfortable typing experience, while the Mahjong theme adds a touch of creativity to the setup. Despite the minor issue with ISO keycaps, the keycap set is highly recommended for its overall quality and aesthetics.