Have a good stretch, lightweight and water-resistant.

PREMIUM QUALITY ENVELOPES. Have a good stretch, lightweight and water-resistant. Lower the shipping cost of your business and protect your products on the rainy or snowy day. TEAR RESISTANCE SELF SEALING ENVELOPES. The adhesive on the fold-over flap is really strong and tamper-evident. There's no need reinforcement tape and it doesn't come apart unless you tear it up.

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