【Package Includes】- It contains 30 Pack 9.25 x 11.75 inches Rigid Mailers, please confirm its quantity and size when purchasing. 【Heavy Duty】- Each Rigid Mailer is made of heavy cardboard, which has strong resistance to bending and tearing.You can send your products directly without inserting additional cardboard. 【Easy To Seal And Peel】- The design of the seal and tear strip allows you to use it easily without worrying about damaging the contents inside. 【Stay Flat Mailers】- We recommend that you store flat items such as envelopes, greeting cards, magazines, etc. 【Suitable for businesses and families】- It is a good choice for post office, company, home! Choose the size and color you want to make shipping more convenient. Bonfasvo is a professional manufacturer of office supplies, we are committed to providing you with excellent office supplies such as envelopes, gift boxes, greeting cards, etc. Please feel free to contact us with any questions, we will reply within 24 hours.