A7 Envelopes - Twilight Blue - 5 1/4 x 7 1/4 (for 5x7 cards) (pack of 100) Envelope Size: 5 1/4" x 7 1/4" Fits Card Sized: 5" x 7" 60lb paper weight (standard envelopes) Square Flap (gummed) pretty, twilight blue