During the nineteenth century, no batter wore a helmet. "Gloves" were not popular until the late 1880s, while the baseball has had the same size, weight, and leather design since 1872. The National League of Professional Base Ball Clubs attempted to regulate uniforms only once, in 1882. The American League adopted this rule at its founding in 1901, but soon after removed it for the purpose of competition fairness. Batter's helmets first appeared in the major leagues in 1895, when they were mandated by the Major League Rules Committee. The requirement was quickly dropped, but it proved so popular that it was reinstated in 1902. It was again made optional during the season, but all players now were required to wear one. The last batter to go unprotected was Babe Ruth on April 13, 1920. After the 1912 season, there was a major change in the look of baseball when the Boston Red Sox introduced a new style of uniform featuring short sleeves and a flat front with a pleat down the center. The Philadelphia Athletics followed suit a few months later. These are considered the first true modern baseball uniforms. From then on, every team wore some version of these designs until the 1970s, when they were replaced by overalls-style clothing. In 2001, Major League Baseball approved a new batting helmet designed to reduce the risk of head injuries. This is the only thing that batters wear today.