Mesh is usually found on the top of the dress and gives you coverage while still showing off your silhouette. I usually see this with black dresses.
Lipsy Sequin Dress With Mesh Top$96.11 NOW $48.05
Jess Mesh Top Skater Dress20.00 available at boohoo.com
American Apparel Mesh Top Mini Dress
$74.57 NOW $37.28