I've recently added some new Deep-Cut design mats to the BigRedBatshop. These 6' x 4' approximately (1200mm x 900mm) cloths are printed with a faint 12cm grid. I anticipate that people might like to use them to play To the Strongest! or other grid-based games, with armies based on 100mm or 120mm elements. The mats are 15 by 10 grid squares. I have the 12cm grid in three designs.
Above is the sagebrush mat showing the grid, with some 28mm plains mat.
The plains 12cm can be bought here.
The sagebrush 12cm sagebrush can be bought here.
And the wasteland 12cm, here.
I also have mats in other grid sizes (7.5cm/10cm/15cm/20cm) and ungridded mats, here.
Deep-Cut mats are printed on a light cloth and can be washed, ironed, and folded or rolled away for storage. I regularly post them overseas.