Quality Park Clasp Envelopes, 5 x 7.5 - Inch, Brown Kraft, Box of 100 (37835) Clasp envelope on paper stock features a gummed flap closure Double prong metal clasps with reinforced eyelets Reusable Heavily gummed flaps Clasp envelope on paper stock features a gummed flap closure Double prong metal clasps with reinforced eyelets Heavily gummed flaps Reusable Envelopes