This is a European made reproduction of German WW2 gas mask cleaning cloth. The item was used to clean the lenses on the gas mask either when in use or when taken off. The size is about 22.5cm x 22.5cm to correspond to the original size.  It is $5.50 to ship this item anywhere in the US, Canada, Australia. NZ. and most of Asia and $5.00 within the EU.