Reusable envelope is ideal for office, school and home use. Durable double prong metal clasp and reinforced eyelet. Heavily gummed flap closure..Envelope Flap Style: Straight Flap.Rugged Kraft envelopes feature reinforced clasps plus deep gumming on flaps for a secure seal.Metal clasp secures flap and lets you easily reopen flap when needed.Kraft is the strongest paper choice available.Perfect for home, office, school, interoffice or mailing.Reinforced clasps plus deep gumming.Made in the USA.Gummed flap ensures firm seal to prevent peeling during delivery.Heavyweight, 28 lb. Kraft material is strong and opaque for confidentiality.Finish: Smooth.Replenish the office supply with a bulk dispenser. Keeping a large quantity in stock makes it easy for every employee to access the envelopes as needed..They’re designed and structured as a basic clasp envelope, useful for schools, administrative records and business mailing, with a smooth, windowless surface for customized messages. The flaps feature both metal clasps and gum adhesive for much needed peace of mind.