Law 4 - The Player's Equipment Safety A player must not use equipment or wear anything which is dangerous to himself or another player (including any kind of jewellery). Basic Equipment The basic compulsory equipment of a player comprises the following separate items: a jersey or shirt shorts - if thermal undershorts are worn, they are of the same main colour as the stockings shinguards footwear Shinguards are covered entirely by the stockings are made of a suitable material (rubber, plastic, or similar substances) provide a reasonable degree of protection Goalkeepers each goalkeeper wears colours which distinguish him from the other players, the referee and the assistant referees Infringements/Sanctions For any infringement of this Law: play need not be stopped the player at fault is instructed by the referee to leave the field of play to correct his equipment the player leaves the field of play when the ball next ceases to be in play, unless he has already corrected his equipment any player required to leave the field of play to correct his equipment does not re-enter without the permission of the referee the referee checks that the player’s equipment is correct before allowing him to re-enter the field of play the player is only allowed to re-enter the field of play when the ball is out of play A player who has been required to leave the field of play because of an infringement of this Law and who enters (or re-enters) the field of play without the permission of the referee is cautioned and shown the yellow card. Restart of Play If play is stopped by the referee to administer a caution: the match is restarted by an indirect free kick taken by a player of the opposing side, from the place where the ball was located when the referee stopped the match* Decisions of the International F.A. Board Players must not reveal undershirts which contain slogans or advertising.  A player removing his jersey to reveal slogans or advertising will be sanctioned by the competition organiser. Jerseys must have sleeves.