Letterbox Wine is a packaging consisting of an external box designed to complement the product to be contained and to be inserted in the letterbox. The regular shape of the packaging allows the bottles to be stacked and interlocked in the best possible way in a minimum space in order to significantly reduce volumes and consequently CO2 emissions in the transport and storage phases. The communication aims to raise the user's awareness of environmental sustainability and the use of the product. The messages are expressed through simple and easily understandable vector graphics.