The Leader of Labels industry Some companies sell what they call "waterproof labels" for you to use in your inkjet or laser printer. Vinyl is often used for inkjet printing and polyester is used for laser printing. While we agree that polyester laser labels are waterproof once printed, we recognize that most of us do not have access to a laser printer. So when discussing waterproof vinyl inkjet labels - the term waterproof might be a bit misleading. Other companies refer to the same type of inkjet vinyl labels as "water-resistant". This by far is the most honest description of such a label when printed on an inkjet printer. Regardless of how it's described, it's typically the same material and therefore the key to success is simply knowing how to work with the waterproof / water-resistant label material.