Biggest portable chessboard

I have looked at swedish amazon.se and if I in the future will buy a chessboard I maybe buy this one. It´s the biggest portable chessboard I have seen 52X52 cm made of wood and called SQUARE - Chess AMBASSADOR LUX - 52 x 52 - Chess sets - Chess pieces and wooden chessboard. I think a chessboard bigger than that will be clumpsy to carry with you on trips etc and it´s not too expensive neither. Another chessbord in pure metal but abit smaller is this see third pic.