Soft-sided luggage refers to an employee whose talent and multi-tasking abilities allows him or her to take on assignment after assignment. They, like soft-side luggage, seemingly expand to handle the workload. Of course, they completely collapse on weekends.

“软面行李箱”指才能出众、能同时处理多项任务的员工通常会接手一个又一个任务，就像软面行李箱一样可以拓展出空间来装更多的东西。当然，这些人一到周末基本都累昏过去了。

For example:

Jenny is like a soft-sided luggage in the office. She is taking most of the assignments and can always handle them properly.

珍妮就像办公室里的软面行李箱一样，大部分的工作任务都由她接手，而且她都能处理好。