Reusable envelope is ideal for office, school and home use. Durable double prong metal clasp and reinforced eyelet. Heavily gummed flap closure. This product was made from wood sourced from a certified managed forest. Envelope Size: 9 x 12; Envelope/Mailer Type: Catalog/Clasp Mixed Colors; Closure: Clasp/Gummed Flap; Trade Size: #90.