Each mailer is durable and lightweight, can be custom printed, and is available in standard and custom sizes. Polyair mailers increase product security while decreasing shipping costs. Light weight and small size lowers shipping costs Easy to pack and seal with EZ Seal release liner, lowering labor costs Bubble lining protects contents during shipping process Polymailers are water resistant to protect against the elements Tamper-evident hot-melt self-seal closure helps ensure content security Promote your brand with up to 8 color print