*ear mufflers :P 

Based on the current weather I am assuming that you need these for noise protection, rather than for keeping your ears warm, in which case a quick search on Amazon reveals a huge selection:

https://www.amazon.co.uk/s/ref=nb_sb_ss_c_1_9?url=search-alias%3Daps&field-keywords=ear+defenders&sprefix=ear+defen%2Caps%2C161&crid=8MX5NR6C0H5L

(on English language sites the correct term is "ear defenders" - although "ear muffers" is a much nicer name for them).

Alternatively, if you need to see them and or try them out, I think I've seen them at Jumbo, there's an industrial clothing showroom at Wendt (right by the bus stop) that must have them or you can go to a gun shop ( the two I know of are the one on Rue de Lausanne and Infinity Tactics just out of town to the south).