The character is practiced in all manner of acrobatics--dives, rolls, somersaults, handstands, flips, etc. Tumbling can only be performed while burdened with light encumbrance or less. Aside from entertaining, the character with tumbling proficiency can improve his Armor Class by 4 against attacks directed solely at him in any round of combat, provided he has the initiative and foregoes all attacks that round. When in unarmed combat he can improve his attack roll by 2.
On a successful proficiency check, he suffers only one-half the normal damage from falls of 60 feet or less and none from falls of 10 feet or less. Falls from greater heights result in normal damage.