The all new Leatt GPX motocross boot, a 3-year project with long term development and testing using Pro athletes from all over the world! The GPX boot is a real head-turner when it comes to look and style, but the design brief was comfort and protection also. The Leatt motocross boot model range contains many designs including Leatt 5.5, Leatt 4.5 and Leatt 3.5 boots.