Clasp EnvelopeReusable envelope is ideal for office school and home use. Durable double prong metal clasp and reinforced eyelet. Heavily gummed flap closure. Envelope Size: 10 x 13; Envelope/Mailer Type: Catalog/Clasp Mixed Colors; Closure: Clasp/Gummed Flap. Global Product Type: Envelopes/Mailers-Catalog/Booklet Envelope Size: 10 x 13 Envelope/Mailer Type: Catalog/Clasp Mixed Colors Closure: Clasp/Gummed Flap Trade Size: #97 Seam Type: Center Security Tinted: No Weight: 28 lb Window Position: None Expansion: No Exterior Material(s): Kraft Color(s): Brown Recycled Kraft Custom Imprint Included: No Format/Border: Standard Opening: Open End Pre-Consumer Recycled Content Percent: 0% Post-Consumer Recycled Content Percent: 20% Total Recycled Content Percent: 20%