The 1940's was witness to one of the single greatest moments in NFL uniform history: the first helmet design. In 1948, a Los Angeles Rams player painted rams horns on his leather helmet. The number of jersey modifications continues to grow, many teams start switching colors and trying to find the right color combination. The 1942 Chicago Bears and the 1948 Cleveland Browns become the first teams to have undefeated seasons.http://www.buychinajerseysaz.com
