Creating a responsive size selection for UI - S, M, L

Hi, I’m trying to create a responsive size selection (XS, S, M, L, XL) for a mobile app. I have access to conditions but am not too familiar with them. I’m trying to create a unselected states of each size and when one option is selected, the user will be able to adjust the size and the selected state would hide. I would prefer to use the most time efficient method to achieve this, but open to all options if more effective. Appreciate any help as I’m a complete amateur at this!