The K2 VO2 100 X Pro is the high end fitness skates you've been looking for. Great for athletes looking for a solid training session or a fitness inline skater looking for a top of the line skate with all the bells and whistles. When you pull up to the park you won't have a whole lot of time between parking and skating thanks to the K2 Speed Lacing System found on the K2 VO2 100 X Pro. This system utilizes a grab, pull and lock system which is quick and effective both for putting on, and for taking off the skates. With K2's Performance Hi-Lo technology that allows skaters to take advantage of the acceleration and maneuverability of the smaller front wheels while enjoying the top end speed of the larger rear wheels. Combined with the revolutionary Vortech Ventilation System, and K2's Speed Lacing System, you end up with skates that are ready for a comfortable training session. *Note: Brake is removable but not compatible with left skate.