Our Medium Mailer is a perfect blend of tough as nails packaging and modern design efficiency. Measuring 9" x 11" and designed to accommodate books and medium sized electronics accessories. Best Mailers start perfectly flat (like all Best Mailers do) and have maximum capacity of 2″. These mailers feature a self-seal closure and nylon tear strip for easy opening. Compared to bubble mailers and small boxes, Best Mailers are the hands down winner for shipments under 2" thick.