Work Hard, Sleep Hard. Thanks to Deep Sleep Mask, you can get up to 20 minutes of uninterrupted deep sleep, paired with the warmth of our self-heating technology. And the best part—it's larger than our other Popmasks, making it the perfect fit for men.

• Contains 5 self-heating eye masks
• Starts warming within 30 seconds
• Ear loops provide a secure fit
• Heat lasts 20 minutes

What's inside?

The mask itself is made from non woven cotton, each heat cell contains iron powder, vermiculite, activated carbon, salt and water, all naturally occurring ingredients. 

How it works?

When the pouch is opened, the iron powder inside heat cells reacts with oxygen in the air causing it to heat up gently. The mask reaches a maximum temperature of 100.4 F or 38 C and stays at this temperature for at least 20 minutes.