"Side tabs" refers to small clickable sections located on the side of a webpage or document that allow you to navigate or access different sections or pages without scrolling or searching through the entire content. Full definition
They are pull up design instead of side tabs. (themamaneeds.com)
Also available in plain black, they comprise characteristic features such as a rounded toe, low block heel and elastic side tabs. (kelkoo.co.uk)
Karen doesn't recommend it at night because the stretchy side tabs are absorbent, unless you are choosing it for night for the special feature of being able to possibly pull it up and down for potty learning. (greenmountaindiapers.com)