Perfect for Mailing & Crafting Send Colorful Greetings in Style Pair w/ Shades like Black & Baby Blue 6 1/2 x 6 1/2 Premium Invitation Envelopes JAM Paper Dark Grey 6.5 x 6.5 Square Envelopes are a unique choice for invitations, greeting cards, and other mailings! These envelopes are made out slightly textured 28lb paper. Each one features a industrial and versatile, yet cozy dark gray color. These straight flap envelopes feature moisture activated, secure gum closures to keep items in place as they travel through the mail. These envelopes have a perfectly square shape and measure 6.5 x 6.5 inches in size. Their unique appearance is sure to get the attention of all your mail recipients! Size: 6.5in x 6.5in | Color: Dark Grey