Includes 100 self-seal photo/document mailers Mailer size: 6 X 8 inch (15.1 x 20.3 cm) Constructed from 400 gsm paperboard for a lightweight yet sturdy design Approximate weight per mailer: 25 g Thickness: 1.3 mm Peel-and-seal closure with strong adhesive helps create a secure seal Tear-strip opening allows easier access to contents Designed to help keep enclosed items secure during transit Suitable for mailing photos, documents, printouts, CDs, certificates, paper sheets, handbooks, catalogues, literature, manuals, booklets, invitations, and blueprints Useful for office, business, shipping, online order packaging, and personal mailing needs