Poster Style Reversible/Erasable Academic Yearly CalendarReversible vertical and horizontal formats allow you to choose the format that fits your office space. Extra-large daily squares offer ample writing space. Readable from up to 20 feet away! Easily erases with a damp cloth for changing plans. Black water-soluble marker included. Weeks are numbered. Size: 24 x 37; Page Color/Theme: Blue/Gray.