DFEND #0 Poly Bubble Mailer – White, 25 pk, 6″ x 9″ provides the protection you need to mail valuable items and sensitive documents. in the form of white poly bubble mailers, allowing you to mail with confidence. What Makes DFEND Brand #0 Poly Bubble Mailer – Reliable? These poly bubble mailers are made with recycled material, promoting the environment while preserving your most essential items. The interior of each bubble mailer envelope is lined with high-quality bubbles, deflecting the chance of damage even during shaky transit. Which Type of Items Can The Bubble Mailers Hold? These durable bubble poly bubble mailers are labeled as 6″ x 9″ and are entirely flexible. Can accommodate shirts, tools, silverware, small electrical items such as phones, or even books.