We did something for a good cause. Together with Alza, we started selling balls that help. By purchasing our marbles on their e-shop you will contribute to the activities of the Petr Koukal Foundation, which with its project STK for men is dedicated to the prevention of serious diseases in men.
You can shop here: https://www.alza.cz/cvrnkaci-kulicky-stk-pro-chlapy-nadacni-fond-petra-koukala-d5228269.htm
