The Finnish gas masks are one size fits most and come with fully adjustable straps to the rear, and filter as shown with most containing Finnish language instructions as well. The bags are made from green canvas, with press-stud fastenings, several internal pockets, and comes complete with adjustable shoulder and body straps. Please note: These are genuine military surplus so there may be color variation and signs of storage to the bags and masks. These are civilian gas masks, not designed for military application. They are surplus collectables over 20+ years old, they have been checked/neutralized and they have no military or intelligence applicability.