Bubble Mailer - 13 x 18, Box of 10 is a dependable shipping and document-protection mailer for everyday mailing, filing and document handling in homes, offices, schools, clinics, retail counters and busy mailrooms. It features extremely durable and versatile. Tamper-evident secure closure. Open end. 100. Key details include 13 x 18 in, box/pack of 10. The easy-to-use closure makes it simple to prepare letters, forms, invoices, statements and other documents while helping keep contents neat, protected and ready for delivery. Its practical size, pack quantity and ready-to-use design help customers choose the right supply quickly, stay organized and maintain a smooth mailing workflow for routine correspondence and administrative tasks.