√ Resistant: Made of high-density polyethylene, the document holders are resistant to rain and shock, so we will make our documentation completely safe. The back of our document holder envelopes contains a super strong adhesive that will allow you to stick them over any shipping container such as cartons, plastic bags, pallets or wooden trunks. With the tamper-proof secure closure we will keep our delivery notes, invoices or important documents confidentially until arrival to the recipients. ▪ Secure documents: It will allow the recipient to receive the documentation in perfect condition, so it will be completely safe and protected within our document holder envelopes. Our document envelopes have an inner size of 315x250mm. This measurement is perfect for A4 documents.