I've imported a limited stock of the new mouse-mat terrain strips from Deep-Cut Studio, that enable a river, road or track to be quickly laid across the top of your existing terrain mats, and rolled up for storage. They are six foot (183cm) long by (9cm) wide, lay flat on the table, and are non-slip. They can easily be cut with scissors or a craft knife.
You can find them in my shop here.
I export all over the world, and the £ is at a competitively low rate just now…