I ordered several sizes of these. At 5β4β, these were a good happy medium once they were full. Not too heavy and I could still get my hands around the package.I shipped them (xl, large, medium) across country via USPS. Some arrived very beaten. I used A LOT of tape and a lot of the corners were smashed in. They held up. I had to recycle some, but most i repurposed for Goodwill donation items.I tend to pack similar items together.I do recommend the Medium size for heavy, dense things like books.
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