- 100 - Clear Resealable A7 Card Envelopes Polypropylene Cello Bags 5 1/2" x 7 1/2" 1.5mil (A7) (Pack of 2) Set of 200 Clear Envelopes These bags will fit an A7 size card with envelope Close and re-close these clear-as-glass cello-style bags. No heat sealing needed FDA and USDA compliant.