Handball gets sticky because athletes actively use hand mastic. The mastic prevents the "round"from slipping in the hands during play. Mastic is treated not only hands,but also shoes. Since 2017,the development of synthetic balls,which will not use a sticky substance,but they lose their "stickiness"after 15-20 minutes of play due to the fact that they get dirty on the floor,absorb the sweat of players.