Power Stretch Donuts 3 Pack

Wasn't sure about the stretch at first but they fit comfortably and stay put, which was my main worry. The three colors make it easy to tell them apart, and the vibration adds a nice extra layer without being overwhelming.

The vibration is stronger than I expected for something this size, and the stretch means it actually fits comfortably instead of pinching. Having three different colors is handy since we just keep one in the nightstand and swap them out.

The vibration is stronger than I expected for something this small, and the stretchy fit worked fine for both of us. Only gripe is the batteries don't last through a whole evening, so keep spares nearby.