Specifications:

[60*90] extra thick hardcover 10 pieces

[60*90] extra thick hardcover 20 pieces

[60*90] extra thick hardcover 30 pieces

[60*90] extra thick hardcover 50 pieces

[60*90] extra thick hardcover 70 pieces

[60*90] extra thick hardcover 100 pieces

[80*90] extra thick hardcover 10 pieces

[80*90] extra thick hardcover 30 pieces

[80*90] extra thick hardcover 50 pieces

[80*90] extra thick hardcover 70 pieces

60*90-20 pieces plus 80*90-10 pieces [combination 30 pieces]]

60*90-30 pieces plus 80*90-20 pieces [combination 50 pieces]]