Arms are always underestimated at first when searching for a chair then you sit it in for a period of time and realize how crucial your set of arms on your office chair are. Some people like arms as straight as can be and others like them at a slight angle and curve downward toward the floor where their arms lay comfortably and often times using it as a handrest as well. I am the 2x D-arms and I lean toward the second option where you have a slight downward curve. I am a popular set of arms and believe that I will only continue to become more popular.