These stamp blocks are part of the Create Happiness Art Journaling Collection designed by Vicky Papaioannou. It includes 2 blocks with stamping grids, one measuring approximately 2 x 2 inches (5 x 5 cm) and the other approximately 3.5 x 3.5 inches (9 x 9 cm). Each block has a thickness of approximately 0.5 inches (1.3 cm).