Outdoor brand Jack Wolfskin has completed the certification process for Germany’s Grüner Knopf (Green Button) label, which companies that achieve a high level of environmental and social responsibility are entitled to put on qualifying products. It said a large variety of its products are already certified and available in its stores.

Government minister Dr Gerd Müller, who was the driving force behind the Grüner Knopf initiative, said it offers consumers “straightforward guidance” on their buying options. He added: “I am pleased that Jack Wolfskin decided to participate. It sends an important signal of global responsibility.”

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