I bought this a month ago.. 
Its pretty good.
Easy to maintain.
I feel the small ones are too small , I mean slightly bigger size would be more convenient..
I have been washing them in dishwasher they come out absolutely clean but back becomes dark and leaves blackish-grayish residue on skin. Just a bit worried, hope it’s safe..
Else I am very happy with my buy because they are very very easy to clean .
I recommend this .