5 1/2" x 5 1/2" (14cm x 14cm) colored paper. paperweight 80 gsm. 300 sheets: ; 100 sheets - pink paper ; 100 sheets - blue paper ; 100 sheets - green paper. Often used in Montessori settings as the paper is designed to be thin. The thinness ensures that "the lighter paper is a control of error encouraging lightness of touch essential for good writing skills. A heavy hand creates writing fatigue."