The clothing brand Le Mont St Michel was founded in 1913, making bleus de travail - heavy denim work clothes for proper roughty toughty working men. Even today you can see their painted adverts from the middle of last century on buildings all over France. Close to us there are signs in Preuilly, Saint Flovier and le Petit Pressigny - but because they are ubiquitous I have no doubt there is advertising we drive past each day but no longer notice.
In 1998 the business was taken over, and according to their website it is now an "urban & modern fashion label, still in line with the functional soul coming from its workwear legacy". It looks rather like leisurewere faux rugby shirts to me, but I'm not a clothing expert.
When we were in Paris we saw one of their stores.
You couldn't dig your spuds in the new stuff...