These A2 Clear Plastic Envelopes fit greeting cards, invitations, and much more. Clear Plastic Envelope bags can be used as a package for your cards or as protective greeting card sleeves. Whichever way you use these plastic envelope bags, they do the job! A2 Clear Plastic Envelopes measure 5 7/8" x 4 1/2" when sealed. These envelopes are made to fit cards up to 5 3/4" x 4 1/2. Each Clear Plastic Envelope features an adhesive to seal the envelope.