USB Rechargeable Hot Eye Mask I used it once, but it didn't fit, so I'm selling it. It's in good condition, but it's a used item, so please understand. ☑️ 3D design with a recess, gentle on the eyes and less pressure ☑️ 3-level temperature adjustment ☑️ Cordless, making it easy to carry ☑️ Can be used as a regular eye mask by removing the inner pad ☑️ 30-minute automatic shut-off function, so you can fall asleep with it on