C5 Pearlescent Copper 120gsm Peel & Seal Envelopes (Qty 250) 162mm x 229mm1 2 day delivery as standard on this product C5 Pearlescent Copper 120gsm Peel & Seal Envelopes. These envelopes are size C5, which is designed to fit A5 size cards invitations or A4 folded in half. Dimensions are 162mm x 229mm. Our Pearlescent Envelope range adds a touch of glamour to your mailing. A perfect choice for special occasion invitations and greeting cards, the pearl sheen outer to the paper ensures the recipient knows there is something a