This pack contains 200 kraft bubble mailers in #1 size classification. Each mailer measures 7.25 inches wide by 12 inches long interior usable space. The exterior consists of white kraft paper material weighing 60 gsm. The interior features a bubble cushioning layer constructed from polyethylene with 3/16 inch diameter air-filled cells. Each individual mailer weighs approximately 0.09 pounds. The self-sealing adhesive strip closes by pressing the flap down without requiring water or additional tape. The adhesive strip remains sealed once pressed closed. The white kraft paper exterior provides opaque coverage that conceals package contents from view. The interior bubble layer absorbs impacts during handling and transit. The mailers accommodate flat items measuring up to 7 inches wide by 11.5 inches long when allowing clearance for the seal flap closure. Total pack weight is approximately 18 pounds. Manufactured in China. The kraft paper exterior consists of tear-resistant fiber construction. The polyethylene bubble cells maintain air pressure during normal handling conditions. The adhesive strip contains pressure-sensitive adhesive compound. Each mailer consists of kraft paper exterior laminated to bubble interior layer. The pack contains 200 individual mailers arranged flat for storage.