As the 1990's evolved, and fashion - savvy shoe fans decided socks with sandals was a weird thing, socks were only worn with closed toe shoes, boots or athletic shoes. (bayareafashionista.com)
Pair them with closed toe pumps to be on safe side if you work in a conservative field. (the-wardrobe-stylist.com)
For safety reasons, all campers must wear athletic shoes or other shoes with closed toes. (coastalhumanesociety.org)