Lange offers its unique Choose Your Width option in order to fit more foot shapes better. • Many of Lange's boots feature 2 distinct widths. RS, RX and XT are offered in 97mm and 100mm lasts. • Construction and fits are consistent from 97mm to 102mm lasts. The NEW 102mm last expands the comfort range selection without sacrificing performance. ...Choose your width: No compromise between performance and comfort!