Darice Heavyweight A2 Cards/Envelopes (25 Pack), 4.375 x 5.75, White (GX800079) Cards and envelopes in classic white are perfect for invitations, handmade cards, notes, and more A2 sized card measures 4.25 By 5.5 Inches White envelopes measuring 4.375 By 5.75 Each 25 card and envelope sets per package