Easily print, write, or add labels to address the envelopeQuick and easy to use gummed seal design this has a strong adhesive that completely secures your contents to prevent them from falling out and being lost or shown to others Dark Black security tint that is completely opaque ...Easily print, write, or add labels to address the envelopeQuick and easy to use gummed seal design this has a strong adhesive that completely secures your contents to prevent them from falling out and being lost or shown to others Dark Black security tint that is completely opaque and blocks others from seeing your documents Thick and durable White Paper stock that completely protects your contents during transit. No need to worry about tearing of the envelope Save time sending your mail Our low profile design makes for easily printing in most HP, Brother, Cannon, Xerox, and other standard laser and ink jet printers.