JAM Paper® Aqua Blue A9 Invitation Envelopes are made out of smooth, high quality, 28lb paper. Each one measures 5.75 x 8.75 inches in size, making them ideal for A9 sized greeting cards, invitations, and stationery! These envelopes are sold in a pack of 250. Each one has a straight flap with a reliable gum closure to keep items secure in the mail. Each one features a light, serene and summery aqua blue color that will cause them stand out in the mail! These envelopes are great for sending out invitations to bridal showers, weddings, graduation parties, birthday celebrations, reunions, baby showers, and more!