"Good pairing" refers to a positive combination or match between two or more things. It implies that the things complement each other well or work nicely together.
Sentences with «good pairing»
If you want an objective measure for how good a pair of headphones is, look at how long it's been on sale. (theverge.com)
They look so good paired with jeans or even shorts for a casual look. (fortheloveofglitter.com)