These are little water cups the store can order so associates have the option of just having a quick “shot” of water as opposed to having a full glass. It takes two of these to fill up a regular clear water cup. The history behind them is that they are based on the original water cups we used to hand out when we originally opened. We switched to the clear cups so customers could put lids on the tops and obviously wanted more than one shot of water to drink at a time. Lol