1 large- 23 x 16.5 x 0.3 cm ; 9 x 6.5 x 0.1 inches (length x height x width)
  
1 medium- 15.5 x 11.5 x 0.3 cm ; 6 x 4.5 x 0.1 inches (length x height x width)
  
1 small- 10 x 7 x 0.3 cm ; 3.9 x 2.8 x 0.1 inches (length x height x width)

sold as set of 3.