3 Types of BoxSwitch Soda are all very carefully chosen elements to fulfill the theme of the Soda Series.
CO (Red) is an essential ingredient in sparkling water, and it makes the texture silky smooth.
Vitamin C (Yellow) stimulates your taste buds and creates rich layers and hp-similar tactility.
OH (Blue) leaves a hint of refreshing aftertaste, so crispy. 
They are structurally based on Kailh Box Switch V2, fine-tuned weight. The lifespan of Box Switches is rated up to 100 million.