Fake Nike joggers?

[RoséProsecco]

I bought my son a pair of Nike joggers in size XL - described as new without tags.

They arrived today & looked really small - when I checked the label it said XL (with height 156-166cm).

My son has a lot of Nike clothes & on every single item the XL is 158-170cm.

I'm wondering if I've been sold a fake pair?

I'd like to return them

Message the seller?

Take to a shop or trading standards and get them authenticated or not?

Not sure what any of us can do!

Thanks - just looking for advice on what others would do.

Will drop the seller a message - they say no returns but hope they accept.

Was there a photo of the label in the photographs?

I'm out and can't get the full screen on my phone for some reason!

Can you see the size here? -

www.nike.com/gb/size-fit/kids-clothing

I also found this by googling -

No label on the photo - I wouldn't have bought it if so.

And thanks for the sizing guide - this is what I use & what his genuine Nike says for sizing

Actually just checked the listing & there is a label there - urgh

Are they XL kids or youth sizes? I bought a bundle of 4 L Nike Sweatshirts from Vinted. Three were the right size and one was tiny in comparison. With some googling I found out it was a kids jumper.

@TheFlis - I'm not sure will check the kids sizing but was hoping I'd bought youth