Part of the K2 Training line the K2 Radical 100 inline skates are the lightest, fastest and most comfortable training skates on the market today. They are known for their ability to provide comfort and support while enjoying the speed and performance of a 100mm skate. The Radical 100 features a Radical Cuff that will provide you with support and the Original Softboot provides the best fit and comfort on the market. The 400 Longmount frame on the Radical 100 provides you with optimal stability and speed and can be adjusted on the base of the boot to give you a custom feel. With 100mm wheels and ILQ 9 bearings you will get a fast and smooth roll that will have you flying around the streets or parks at top speed. The K2 Radical 100 inline skates are great for longer skates, training and skating marathons. [+]