This item was purchased about a week ago! I set it up at home, but my family members had already bought a similar item, so I'm putting it up for sale. Size per piece: (Approx.) Width 30 x Depth 30 x Thickness 1 cm *The size listed is for the tile itself, without the edges. The width of the included edges is (approx.) 2 cm. Set Contents: Main tiles: Gray 16 pieces, White 20 pieces Edges (sides): Gray 16 pieces, White 20 pieces Edges (corners): White 16 pieces Thank you for your consideration.