Vitrex comfort mask providing relief from coarse non toxic particles suitable for nuisance dust and pollens can be worn with glasses or goggles lightweight and comfortable to wear disposable do not use these products where a device complying with european directive 89686 or 89656 is required comfort masks should only be used to reduce discomfort caused by exposure to coarse non toxic particles where the concentrations of these particles does not exceed the national permissable limits these masks