Never hot or cold, sticky or 'icky', the MouseRug's surface is made of millions of individual soft nylon microfibers with air space between to provide the most beautiful and comfortable mousing surface on the planet. 25.5cm x 18cm. This design is inspired by the Bergamo rugs, woven in western Turkey, north of Izmir. This is the site of the ancient Greek kingdom of Pergamum, which flourished in the 2nd and 3rd centuries BC.