PremierTeam wallet DL size envelopes have a peel and stick opening flap on the long side and a 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 120gsm white paper to give you a professional look for every letter or mailing that you send. These windowed envelopes feature a standard size window to see the address. Security printed on the interior to protect confidential details. The peel-and-stick seal is the strongest type of envelope seal with the longest shelf life; peel away the protective tape to reveal the adhesive, no moisture required.