Today most inline skate boots are made of Carbon Fiber. This is because the lighter the skate the faster you can move your foot to get the most strides in making you go faster then everyone else. Carbon fiber boots are typically heat moldable to get them right against your foot that way skaters can have the most control while going at really high speeds. These boots are made of a Carbon Fiber shell, and soft liner for comfot. These boots are usually low cut to give maximum ankle movement for the skaters because the style of skating does require a lot of ankle movement in the stride.