Handmade pottery.
these are made here in Joinville, Santa Catarina  Brazil.
These are just fine here ´cause our local weather tends to be humid . the was  of the pottery breaths and keeps the correct humidity to my plants. Of course a small pottery needs to be isolated inside to prevent fast drying. Black plastic pots tend to boil the roots of the plants they arbour when kept under our tropical sun.
They are big and heavy and I hardly can cope carrying one of these and they were bought  by 12USD a piece, a bargain!