Sizes15x15cm (5.9"x5.9") or20x20cm (7.9"x7.9") : to fold simple or intermediate modelsortestfolding sequences.
Size24x24cm(9.45"x9.45"):mypreference!It isanideal sizeformostmodels.Itisperfectforfoldingeach daybecauseit doesnot requirea large table to spread and fold the sheet and it is large enoughtofoldcomplex models