Wait this winter and you will se the my NCB complete,I have a white suit,like those of the mechanics,of paper impregnated of protective substances,a GP-5 gasmask with the hose who enter in a bag which inside there's the filter and the hood of the suit slipped over the mask,believe me it's just for airsoft but protects very very well from substances like sulfur dioxide and trioxide.the gp-5's filter isn't original because I'm sorry to use it,it isn't now holds absesto because is disused since 1945 and the filter was maked in 1967 being all white in the snow I'm easyless to be noted from afar But the yours is more particularly that the my.