A ribbed tank top in a stretchy blend stays exactly where you put it. Rib construction grips your body without feeling tight. The stretch means it moves with you instead of sliding around under other clothes. These work perfectly under loose pieces where slipping would be annoying or under fitted things where you need stability. The ribbed texture adds visual interest even when fully covered. We prefer these in neutral shades that work as invisible base layers. The construction should be sturdy enough that the ribs do not pill after regular wearing. These are the rib tanks that stay put through your whole day.