The Fitness Phuzion skates have revolutionized inline skating, and the Argon Bluebird 100 Limited Edition is the most comfortable of the high-performance Phuzion skates. It is the flagship of the Phuzion family, combining the best materials and features both inside and out. The shell is made of durable, fiberglass-reinforced lightweight plastic and features Powerslide's patented Trinity mounting system, which lowers the center of gravity and allows for excellent control and stability. The upper part of the Argon boot is made of nylon with welded TPU parts that wrap perfectly around your foot. The inner part of the boot contains a Recall memory foam padding that provides ultimate comfort and a personalized fit. This is a complete fitness inline skate that is perfect for long and intense training sessions. The Phuzion Argon Bluebird 100 features a sophisticated closure system that includes traditional lacing, a supportive cuff buckle, and Atop's famous disc closure system, which keeps your foot securely in place. The Phuzion Argon has a lightweight precision magnesium frame mounted on 4x100 mm wheels and ABEC 9 bearings, offering you a rapidly smooth ride that is ready for intense training and takes your fitness inline skating to a whole new level.