This is best used while masturbating, or possibly edging yourself. The vibrator side rests in your palm, while your fingers curl around to close the wings down around the shaft of your cock. It's handheld, though it only requires a single hand.

There isn't any smell on the toy, which is always positive. The ripples along the toy help with your stimulation, while the vibration increases this further. You can make things tighter, of course, by clamping your fingers down more firmly while stroking yourself.

Overall the design is fairly simple. A button to turn it on or control the vibration. The wings grip your cock. It's not an overly large toy, so it should fit in most palms, regardless of them being male or female. It could be discreet in that some viewing it may not instantly realize what it is meant to be used for. So this can help somewhat in travel, though I guess there is a risk of having to explain to an official just what the toy is meant to be used for.

This is a silicone toy, so the standard rules apply concerning lube. Water-based only should be used, although you could get by with none at all. While this is a waterproof item, I would still hesitate to submerge it in boiling water to sterilize it. Rather I would use hot water flowing over it from the tap accompanied by wiping it with toy cleaner and/or mild soap and patting it dry with a cloth. For storage, you can use the box it comes in, which is rather nice in its own way.