Set of 50 "Sunflower" Self Sealing Seed Envelopes (Die 2b) 3.25" x 4.50" These blank, 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. Perfect for saving and storing seeds, or other small materials and objects, such as screws, beads, sd cards, coins and more. Seed envelopes packaged by Seed Needs, a brand known for it's quality seed products.