A2 Envelopes - Light Gray 70lb - 4 3/8 x 5 3/4 (for A2 cards) (pack of 25) Envelope Size: 4 3/8" x 5 3/4" Fits Card Sized: 4 1/4" x 5 1/2" 70lb paper weight (slightly heavier than standard envelopes) Square Flap (gummed)