Configurable product combining attributes

[maltitco]

How to combine two attributes: size and length, in such a way that the length will be automatically highlighted after selecting the size.

Example below:

[theMageComp]

Hello @maltitco 

Won't be able to see your screenshot until one of moderator approves it.

But trying to understand how exactly you want both attributes combined?

[maltitco]

@theMageComp I mean pairing two attributes. Currently, as in the demo, we have color and size (red and L) selected separately. I would like to create a pair so that by selecting one attribute the other one will be automatically included.

I hope the administration will approve my screenshot quickly, which would explain exactly what I meant.