Travel money card for under 18's.

[FindingMeno]

Any recommendations?
I wanted to do a PO one but it's for over 18's, so I'm guessing I need to go with a company where I can link a card.
Interested in all experiences, whether bad or good, and a heads up to any pitfalls/ hidden fees.

If the child is 11-17 they can get a FlexOne account from nationwide with a debit card. Card can be used for chip+pin, cash machine and contactless transactions abroad.
I think the fees are 1.5% for card transactions plus a cash fee for using a cash machine, but the exchange rate is good.

DD has a Flex One from Nationwide and there are no fees for using the card abroad.

Cash withdrawal in pounds in the UK
No fee

Cash withdrawal in foreign currency outside the UK
No transaction fee

Debit card payment in pounds
No fee

Debit card payment in a foreign currency
No transaction fee