One answer is slippers, yes, but surely it's most famous for Cognac (and Pineau de Charentes acc Wiki, which Ive heard of but never tried. Anyone tried it?)
Note the spelling, Raebet.
Raebet - Poitou Charentes has the highest number of hours of sunlight in France and consequently attracts a huge amount of naturists from all over. I only came upon the place in travelling through France and my answer to your question was perhaps a bit tongue in cheek, however if you ever go there you'll know what I mean - wearing slippers could be described as being over-dressed in some places!!
lol, Harry. Well worth reading the question properly, and your answer, instead of just being transfixed by the spelling Sharentes and the less than obvious (to me) answer slippers. Sorry, rollo!