| 摘要 |
The present invention discloses a sack for assembling and disassembling the hard case (3) conveniently, wherein the sack with the hard comprising a back supporter (1) , a carry bag (2) and a detachable hard case (3), the hard case (3) is used to protect heavy or fragile articles, when the articles are carried, and the sack without the hard case (3) is used to carry another articles that are not necessary to protect the articles, and discloses the sack for carrying a separated hard case (3) easily and for changing the hard case (3) to another hard case (3) easily, which results in satisfying some portions of various needs and favorites of purchasers.
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