The Women's Velox Crew SS has been discontinued. If you're looking for something new, check out the best short sleeve performance tops for 2020.
Backcountry Outlet says:
When you need a ridiculously lightweight top for highly aerobic outdoor pursuits, look no further than the Arc'teryx Women's Velox Short-Sleeve Crew. The ultra-thin mesh polyester Libro fabric provides un-matched breathability for trail running, biking, or any other activity that has you going full-blast from trailhead to trailhead. The Velox shirt pulls moisture from your skin quickly to keep you as dry as possible while you race the clock.
Historic Range: $22.83-$55.00