R 1-3-1

Players of opposing teams shall wear jerseys of contrasting colors. If the teams are using similar jerseys, the home team has the option which team has to change jerseys.
a. Players of a team shall wear jerseys of the same color, cut and style. The jerseys shall be full-length and tucked into the pants with contrasting Arabic numerals at least 6 inches (15 cm) in height on the back. All players of a team shall have different whole numbers from 0 to 99.
Jerseys shall not be taped or tied in any manner.
b. Players of a team shall wear shorts or pants of the same single color except for branding, logos or numbers on the front side of each leg with a maximum size of 4×4 inches (10×10 cm). The shorts or pants shall have the same cut and style without pockets, press studs or clips. Players may not tape or secure their shorts or pants to meet the regulations. Skirts are illegal.
c. Players of a team shall wear tightly fixed flag belts with pop-sockets and 2 identical flags. Every effort shall be made to keep one flag on each side of the players waist. The sockets shall be placed facing outwards and downwards. The flags shall be clearly visible, hang down freely and must not be covered in any way by the player’s uniform and all colors must be contrasting with the color of the pants. The flags and sockets may not be greased, glued or altered in any way. Any player, who deliberately manipulate their flags shall be disqualified. AR 1-3-1-I to IV
d. If an intra-oral mouthpiece is worn it shall be of a visible, non-white color and with no part extending more than 0.5 inch (1,25 cm) out of the mouth. The use of a mouthpiece is strongly recommended.