I’m not sure how a one-sleeved top can hold up a shoulder, but if Yahoo! Style says it can, it must be true:
Holy moley. In what universe is the pronoun its correct in this sentence from Yahoo! Style?
What does it refer to? newbie? tools? I think the writer meant tools and just didn’t recognize it as a plural noun requiring the plural pronoun their. It’s a careless oversight, just like using the wrong closing quotation mark.
I’m calling T-shirts baring a quote total BS. T-shirts don’t bare quotes, though they’ve been known to bear them.