This is a durable bound cover with cloth on the back that is easy to break. The listed price is for one set of 2 binding covers. Cover/cloth pasting. Size: B5-S; Number of Holes: 4 holes; Vertical / Horizontal: 10.6 inches (267 cm), 7.6 inches (192 cm); Material: Back fabric pasting; Cover cloth pasting; Core material / Pillow ball / Recycled paper pulp blend