100 10x13,100 7.5x10.5 poly mailer shipping bags 2.5MIL*free USPS mail*

100pcs 10x13, 100pcs 7.5x10.5. exterior size: 10" x 13"+(1.5"flap). interior size: 10" x 13" 2.5 Mil. 100% recyclable. water proof.

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