Set of 50 Proterra Self Sealing Seed Envelopes (Die 2b) 3.25" x 4.50" These blank, kraft colored, self sealing seed envelopes measure 4.50 inch tall by 3.25 inches wide when sealed. The envelopes include a 1/2" flap with green self sealing adhesive glue. Perfect for saving and storing seeds, or other small materials and objects, such as screws, beads, sd cards, coins and more. These specialty seed envelopes by Seed Needs are designed to hold in even the smallest of seeds. Seed envelopes packaged by Seed Needs, a brand known for it's quality seed products. <span class="a-text-bold">Dimensions:</span>Each blank seed envelope will measure 3.25&#034; wide, by 4.5&#034; tall when they are sealed. When unsealed, they measure 3.25&#034; by 5&#034; tall. (1/2 inch folding flap.) <span class="a-text-bold">Self Sealing Adhesive: </span>Every envelopes includes a green, self-sealing latex glue that seals to itself when closed. No additional glue or materials are needed to close the envelopes. <span class="a-text-bold">Special Design:</span>These envelopes are designed to hold even the smallest of seeds, such as Lobelia seeds. Once they are shut, there are no visible holes in the corners of the envelopes, like you sometimes see with coin envelopes.