• Product size 21 x 21 x 0.6 cm (w x d x h) • product range 12 pages • card size 6.6 x 6.6 cm • This size and material allows even the smallest players easy handling and readability of individual images and facilitating memorization • On the back of the envelope placed a box for inserting cut cards • The product supports concentration, leads to memory and logical thinking • • The product was awarded the prestigious “Czech Quality” award, “Safe and Quality toy” by the only authorized institution of the ZTLP