What protective gear must field hockey players wear ?
Each team may also play with : "" * a goalkeeper who wears a different color shirt and full protective equipment comprising at least headgear , leg guards and kickers ; this player is referred to in the rules as a goalkeeper ; or "" * a field player with goalkeeping privileges wearing a different color shirt and who may wear protective headgear ( but not leg guards and kickers or other goalkeeping protective equipment ) when inside their defending 23 m area ; they must wear protective headgear when defending a penalty corner or stroke ; this player is referred to in the rules as a player with goalkeeping privileges ; or "" * Only field players ; no player has goalkeeping privileges or wears a different color shirt ; no player may wear protective headgear except a face mask when defending a penalty corner or stroke . "