ValueMailers VM #0 6X10 Self-Seal Poly Bubble Mailer, Black, 6.25" x 9" (Pack of 25) Water, Tear and Puncture resistant. 6.4" x 9" (Usable Space) These tough premium shippers are proven solutions for a wide variety of items. These poly bubble mailers are unique, lightweight padded mailers made from a durable, moisture resistant, multi-layer blend of polyethylene film. The self-seal closure provides a reliable, tamper-evident seal to secure all enclosures. The opaque, BLACK exterior film creates a crisp, professional image for your company.