The Z-Mask contoured eye mask by McNett Tactical, allows you to fall asleep fast and get the deep, REM sleep that leads to improved health, faster reaction time and a better day for everyone. Z-Mask's patented, form-fitting design will effectively block light—without pressing on your eyes. This sleep mask is so lightweight and comfortable that you'll forget it's there—until you wake up rested and ready for whatever the day has in store. Part of the McNett family of brands, McNett Tactical works in collaboration with civilian, law enforcement and military professionals to develop innovative products proven effective for peak performance in any situation. For over three decades McNett has been providing you with the Essentials for Adventure.