BMB Nitrile Beer Mat, 43.4 x 23.4 cm
Knitted Nitrile, rubber-backed and bordered beer mat, 43.4 cm by 23.4 cm.
Soaks the beer (you shouldn't have spillages, though, it is a fucking crime) - and it is washable (by hand, in water).
Serves well and is quite resistant, been tested for two years by self.
Hail the Ale!!