Vilano Springs - Lace Extra Deep Pocket Sheet Sets

I have an extra deep pillow top mattress. Will these sheets fit?
Do they have an elastic piece at each corner?
Thank you,

Per the features:
Fitted sheets easily fits mattresses up to 21" deep

That’s pretty deep.

I’ll have to ask about the elastic. I’m sure it’s on the corners but it may be all the way around. Checking.

UPDATE: Fitted sheet comes with an elastic all around. No extra elastic piece at each corner