When it comes to sending files, contracts, offers, exposés or brochures unfolded by post, DIN C4 envelopes are the first choice. They can be sent as a letter and offer plenty of space for documents of all kinds in DIN A4 format. If you opt for C4 envelopes without windows, the entire front and back are available for your motifs, slogans or branding. Pantone is recommended for full-surface colour application. The special colours can exactly reproduce your company colours.