Tough bags from the Silo-Pack brand are frequently used to mail books and apparel. They’re ideal for products that need a little more security than a cardboard courier bag can provide. These strong envelopes are cardboard envelopes that are nearly comparable to any random utility mailers, but without the extra cost of a well-known brand name. They make packaging a pleasure and keep labour costs down with a simple peel and seal self adhesive closure.

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