I came across this boiled wood polka dot coat on the blog of 3 french stores :
In black, at Impression Lin, a shop in Carpentras :
In purple, at Une fée dans la citrouille, a shop in Thonon :
In beige (and also black), at Bulgane, a shop in Dijon.
But in you want to find this coat in your country and in your town, have a look on the website of the brand Myrine and me, the store-locator page helps you to find a store near to you.