Radiantly white envelopes from Switzerland. You want to send a document to a good business partner you know very well, so not many words are needed. You have also already discussed what you will be sending. If you only have window envelopes in the office, you will need an extra sheet of paper for the address – which is not only time-consuming but also not very environmentally friendly. How about a windowless envelope instead? For example, a pack of Elco Premium C5 with 500 envelopes – radiantly white, with a gray inner print. Additionally, the environmentally friendly envelopes are bleached without the use of chlorine and are compact enough not to take up much space. The FSC certification also confirms the environmentally friendly production of the product. Ensure a smooth and efficient mail delivery!.