One pack contains 10 strips of birch bark

1,96 inch (5cm) x 7,87 inch (20cm) - 10 pieces
1,96 inch (5cm) x 9,84 inch (25cm) - 10 pieces
1,96 inch (5cm) x 11,81 inch (30cm) - 10 pieces

Each tapes of birch bark will be unique.
Perhaps the presence of birch bark on the tapes of natural growths
Tapes can be of different thickness and color (shade)