Amazon.com : LUXPaper A2 Invitation Envelopes in 80 lb. Midnight Black for 4 1/4 x 5 1/2 Cards, Printable Square Flap Envelopes for Invitations with Peel and Press, 50 Pack, Envelope Size
Amazon.com : A2 Invitation Envelopes (4 3/8 x 5 3/4) - 60lb. Bright White (1000 Qty.) : Greeting Card Envelopes : Health & Household
Amazon.com: LUXPaper A2 Invitation Envelopes in 80 lb. Champagne Metallic for 4 1/4 x 5 1/2 Cards, Square Flap Envelopes for Invitations w/ Peel and Press, 50 Pack, Envelope Size 4 3/8 x 5 3/4 (Champagne) : Electronics
Amazon.com: Darice A2 Kraft Paper Blank Cards and Envelopes (50 Sets) – Perfect for DIY Invitations, Cards, Notes and More – Ready to Decorate or Run Through Printer – Card 4.25”x5.5”, Envelope 4.37”x5.75”