Poly Mailers (also known as Polymailers/ Mailing Bag/ Postage Bag/ Poly Bag/ Plastic Mailing Bag/ Poly Plastic Envelopes/ Courier Bags/ Courier Mailing Bag) are plastic envelopes. They can be used to mail computer accessories, fashion accessories, clothings and even shoes. Poly envelopes are a great alternative to paper envelopes, as they are lightweight and can waterproof your items.
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USE PLASTIC ENVELOPES!
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