PremierTeam wallet envelopes in DL size (110 mm x 220 mm) have a self seal opening flap on the long side and legal window to see the address. White DL envelopes from PremierTeam measure 110 mm x 220 mm (4.25 x 8.5) and are made from a quality 110 gsm white paper to give you a professional look for every letter or mailing that you send. These windowed envelopes feature a legal size window so that the recipient address can be displayed. Security printed on the interior to protect confidential details. The self seal flap has adhesive on both sides for a quick, easy and secure seal.