The Ina Wave is best used solo, or at least with one person focused on controlling it. Given the location of the controls and no remote, dexterity and some very specific attention is required to change settings. I've tried to use it while orally pleasuring my husband, but the required focus will break my concentration. It will stay in on its own, but I'm small on the inside, so it fits me snugly.

The silicone is smooth and clean-feeling. It washes very well and it's waterproof!!!! For better or for worse, it's not very flexible.

My g-spot is very low. Fully inserted, the wave doesn't "wave" in the proper location. If I required direct stimulation of the clitoral arm, this would be a problem. In actuality, not being able to fully insert it works to my benefit.

While it's in standard (non-wave mode), it's relatively quiet...quiet enough that it can't be heard through thin walls or closed doors. It might be quiet enough to not be completely obvious if you're covered with a blanket. As soon as wave mode is on, well, um...it's loud. My husband works insane hours, and it often takes me one hr. + to orgasm, so I sometimes tell him just to go to sleep while I take over. If I go into wave mode, he will always wake up, and he sleeps with headphones/music on. So, yeah...it's LOUD.

The Ina Wave washes easily. It also doesn't collect dust/lint. I've had no problem using it with lubes, etc.