Pyramex Men's Hi-Vis Long Sleeve Shirt

Will the reflective tape on the ANSI-rated versions hold up in the wash?

Yes, the reflective material is engineered to withstand multiple washes, though it is generally recommended to wash the garment in cold water and hang or air-dry it to maintain the integrity and longevity of the reflective properties.

Is there a benefit to the "black bottom" design?

Absolutely; the black-bottom panel is specifically placed in high-contact areas to hide dirt and grease that typically accumulate during a workday, keeping the shirt looking cleaner for much longer than a solid hi-vis color.