PBS stands for "Penguin Belly Slide". It is a uniform keycap profile.
"PBS uses a combination of a cylindrical front and back with a spherical top scoop. The result is a wide scooped contact area at the top, which enables a comfy and ergonomic typing experience."
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"Designed by Matt3o and brought to you by CannonKeys and Keyreative."[1:1]
CannonKeys Introducing PBS https://cannonkeys.com/collections/pbs ↩︎ ↩︎