FlexFit design moves with your mouth for comfort all day long Larger surface area of the patented wave design means more air flows in and out of the mask SmartStrap is adjustable and hangable allowing it to be hung from the neck when not in use 99.97%...
FlexFit design moves with your mouth for comfort all day long Larger surface area of the patented wave design means more air flows in and out of the mask SmartStrap is adjustable and hangable allowing it to be hung from the neck when not in use 99.97%...