Size #000 4.25x7.5 Kraft Bubble Mailers with Self Seal (500 Qty)-K-000-500 Mailers are self-sealing for easy packing with a tamper-evident Completely opaque for content privacy and professional appearance These mailers are 100% recyclable. Use for all of your shipments with all carriers including UPS, FedEx, DHL, USPS and more Air bubble cushioning along with the rigid kraft paper exterior provide exceptionally light protection