The .13 mil thick vinyl and
waterproof zip top closure protects valuable documents from dirt, dust and
moisture. Great for commercial or marine applications. Notations can be made on
the clear, vinyl covers by using a grease pencil or water based felt pen and
wipes clean with either a dry cloth or soap and water. Perfect for business,
contractors, architects, sports, pilots, surveyors, engineers, builders,
navigators, artists and more. Extra-large envelopes for maps, plans, artwork and
more. Crystal clear, heavyweight vinyl with zip top and hanging grommets.