Take your mail to a new level with JAM Paper A2 Premium Invitation Envelopes. These polished Smooth Black invitation envelopes measure 4 3/8" x 5 3/4" in size, are crafted from smooth 24 lb. paper, and feature a moisture-activated gum closure that keep contents in one place. Ideal for sending graduation party thank you cards, wedding save the dates, special announcements, dinner invitations, business correspondence and memos, promotional/marketing materials, photographs and much more! From professional to personal mailings, our envelopes cater to all occasions in superior efficacy. Each has a booklet opening, straight flap and smooth finish. Size: 4.375in x 5.75in | Color: Smooth Black | Material: Recycled Paper Send Colorful Greetings in Style Pair w/ shades like Grey & Purple Perfect for Mailing & Crafting