Omega Chess Competition Set Thick floppy pad (5mm/0.2in thick) made of dense natural rubber, always stays flat and never creases! (57.15cm x 57.15cm/22.5in x 22.5in) Pearl nylon cloth, densely stitched, washable and stretch resistant. High-Impact Polystyrene pieces (44) which have just the right balance and weight for smooth playing. (King is 8.9cm/3.5in high) Two nylon bags for the pieces. Sturdy cardboard carrying tube and rulesheet.