Terracotta pots

Not specifically from Morocco, but Mexico is the closest alternative for me. And no, they're not frost proof as these countries don't get our kind of frost, or cold winters where any moisture in the pot or pot contents will freeze, expand, and crack the terracotta. Been there, done that 

Sadly, it doesn't help the actual pot which will absorb rain/moisture from exterior sources and crack. Terracotta is very quick to absorb but very slow to dry out.

If it's that beautiful, only use it for summer planting. Pots should come with a big add that they were frost proof and an extra price tag of course, so most likely it is not.

We get loads of imported pots here and some aren't frost hardy so you will see that people either a) use 'em in the summer only, or b) wrap the pot and contents up in bubble wrap or hessian and straw . What we gardeners do hey???  I'm sorry but I don't know of anyone here who wraps the inside of the pot to prevent freezing - however that seems to be the preferred choice to prevent drying-out in summer! Hope this helps.