the indoor field size corresponds with the regular size of a handball field, the existing external lines are usually used. The service line is 3 m away from the center line. The server's stationery foot (for standing serves) or first landing foot (for jumping serves) must be completely behind this line when serving. The boundary lines belong to the field, i.e. when the ball touches the line, this is not an error and play will continue. The playing field is divided in half by a 5 cm wide ribbon-like red and white net. It is held above the center line between two posts, its upper edge is located at 2 m height (men) and 1.90 m (women). For the D-Youth (under 12), the height is 1.60 m, the C-youth (under 14 years) 1.80 m. The field also includes a run-off area, which when playing outdoors is 8 m to the rear and 6 m on the sides. For indoor play, run-off areas are limited by the wall or stands, but are generally a minimum of 1 m to the rear and 0.5 m at the sides. The field dimensions given are for adult players, as youth fields are generally smaller. Ball A standard fistball is hollow, filled with air and is made of leather. It must be inflated evenly until it is round and taut. For indoor fistball games, and for different weather conditions in outdoor fistball games, players can use trade association-approved balls with different surfaces (for example, natural leather, plastic coating, rubberized surface). The weight of a ball can vary between 320-350 g (females) and 350-380 g (males). Its scope must be 65–68 cm, and its air pressure from 0.55 to 0.75 bar. It is thus as hard as a soccer ball (0.6-0.7 bar) and harder than a volleyball (0.29 to 0.32 bar). In physical size, it is similar to a soccer ball or a volleyball. The right to select the game ball is determined by lot before the game and replaced after each set. Increasingly, uniform balls are outlined and provided by the organizers to ensure equal opportunity for all teams participating at international championships. The ball can often be spiked at speeds of up to 100–120 km / h. In the field of youth other ball dimensions come (especially lower weights) are used, see the regulations. Strategy and tactics Formation In contrast to volleyball, where the