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 89/686 or 89/656 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 permissible limits. These masks may be used to protect against the exhaled breath of the wearer.