NefLaca White 3000 Pack 12x15.5 inch Large Poly Mailers Self Seal Shipping Bags Strong Thick Mailing Envelopes, Waterproof and Tear Proof

White outer surface/Silver inner layer provides confidentiality. Heavy-Duty Weather, Tear, and Puncture Resistant - won’t bust or break open, even if over-packed. Pressure sensitive adhesive provides a high strength durable closure, water and dirt resistant. High-efficiency mailers are perfect for shipping a wide variety of non-fragile items. The lightweight poly mailers shipping envelopes bags are perfect for sending small items via Fedex, UPS, USPS, or DHL.