Size: For this tri-fold pocket, the size of the middle part is 5.1 x 7.1 inches. You can glue your 5 x 7 inch invitation to this section. The bottom right-hand pocket is suitable for smaller cards measuring less than 4.5 x 7 inches, such as menus and information cards. Do not try to put a 5 x 7 inch invitation in the right-hand bottom pocket, it will not fit and will curl up. Please check the sizes carefully before placing your order to ensure they are a perfect match. Each package include 20pcs black pocket invitation and 20pcs envelopes with seals, please noted not include insert cards. Black invitation cover. solid pocket invitations, made from 250gsm matte paper, excellent wedding invitation kit. This black Invitation pocket can be used for wedding invitation cards , also fit for business party, quinceanera, graduation, funerals and other parties.