Translation of "mehr Schein als sein"

[Torsten]

Hi, what would be a good English equivalent of the German expression 'mehr Schein als sein'? It means, that a person creates a lot of hot air and doesn't follow through on their words. It's all on the surface only.

I also found this phrase: 'more hype than substance'. Would that be a good equivalent?
Many thanks,
Torsten

TOEIC listening, question-response: Aren't you due for a raise?

[Beeesneees]

all talk, no action?
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Cheers m' dears!

[Torsten]

Yes, that's good too. Many thanks, Bev!

TOEIC listening, question-response: How did you get to work today?

[Beeesneees]

A more colloquial, rather colourful expression would be 'all mouth and no trousers'.
_________________
Cheers m' dears!