Upload your Image or Logo on the back of the Envelope Or write your info by Text. We will print and ship it to you. Our 28lb Bond Bright White A7 Envelopes are great for fitting your 5" x 7" greeting cards or invitations. These envelopes measure 5 1/4" x 7 1/4" and are made from a 28lb bond paper stock, which is a step up from your average envelope weight. The envelopes will work great on your Inkjet or laser printer and the envelope flap is gummed. 50 Envelopes Per Pack.