At the beginning of December, the sixth “Blausee-Schwimmen” took place in the beautiful Blausee in the Berne Oberland in fantastic winter weather. In total, over 500 "Tough-Cookies & herti Sieche" plunged into the Blausee for a good cause and swam through the 4.2 degree cold water – seven colleagues from Ypsomed also took part.
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