Peel off part of the protective layer (without touching the adhesive) and now place the adhesive side at the marking

you can use Montana Varnish

and Bruce Kilgore

Saphir Tanned Leather polerer og bevarer udseendet af glat læder

New Balance 1906D Protection Pack Black Leather Size:EU 39.5 Peel off part of theNew Balance Athletics, Inc. (NB), best known as simply New Balance, is one of the world's largest manufacturers of athletic footwear and apparel. Based in Boston, Massachusetts, the multinational corporation was founded in 1906 as the New Balance Arch Support Company. New Balance maintains a manufacturing presence in the United States as well as in the United Kingdom for the European market, where it produces some of its popular models.