With this comfortable mask you can experience total darkness at any time of day. 
This highly deepens your sleep, meditations, trance- and medicinejourneys.  It activates your pineal gland and hightens your intuïtion. When used regular you will even need less sleep per day in total. 
 
Highly recommended during your Qi-Om yoga sessions to become aware of your inner light and become more sensitive to your energyfield.
 
This particular mask is washable and ventilates, in comparison with the more expensive "mindfold''.