My sleep item is the Vitagram USB Hot Steam Heated Eye Mask.

Warming the eyes helps relieve fatigue and promotes better sleep.

So, this is the product I purchased.

It's good that it can be powered via USB, making it easy to connect to a computer or portable battery, and there's no worry about electromagnetic waves. It's a win-win situation.

The outer cover can be separated and cleaned for hygienic use.

The temperature is also set to level 3, so you can adjust it to suit yourself.

You can use it as a sleep mask simply by separating the main body cable and the power cord.