lola rose ring sizing?

[Tia]

Lola rose has a very unfortunate ring sizing: S-M-L
Anyone has an idea about the sizing?
I am K or L for ringfinger
N O P could do for my middlefinger
Can't find any sizing instructions on the website

 

[tinaborder]

Size Small is a L, Med is an N, Large is an O and XLarge is a Q