WOW Air from Bristol with very slightly oversized hand luggage, anyone done it?

[fakenamefornow]

Just that. I have a supposedly hand luggage sized suitcase on wheels. It just a couple of cm to big. Will I get it on the plane?

I just flew back from the USA with wow.
At the departure gate everyone had to line up and test their bags in a metal cage measurement thing.
If your suitcase didn't pass you had to pay extra.
If yours was a rucksack you might be able to squash it, but not a hard suitcase.

If it is too big for their metal cage measurement for hand baggage it will be put in the hold.

Ok, Thanks.