The SEASOFT PRO / M6™ 6 mm Drysuit Hood is designed to be worn with a full face mask.  It has a skin-in seal facing the diver's face AND a skin seal facing out toward the mask with a layer of tough nylon fabric sandwiched in between the two.  

The three back panels are compressed neoprene for thermal protection so that your hood is NOT getting thinner as you are getting deeper.

SEASOFT uses 4 different types of neoprene to make these hoods.

The SEASOFT PRO / M6™ 6 mm Drysuit Hood is the best commercial diving hood available anywhere.