Vertigo F-1 Boot Luigino Racing, makers of industry-leading inline speed boots since 1997, introduced Vertigo quad boots in 2011.В VertigoВ is a new concept in quad boot design. As always,В Atom SkatesВ approaches new product design first and foremost with the idea of enhancing skater performance. Our flagshipВ Vertigo Q-6andВ Q-4В boots represent an entirely new concept while ourВ Vertigo F-1В shares some of the same technology while maintaining a more traditional look and feel. Unlike traditional quad boots,В Pro-EВ andВ BFTutilizes anatomical structures to help guide the foot to its optimum position. As a result, Q6/Q4 can lead to a smoother stride and more power. The overallВ effect is to unlock your body's intrinsic capabilities to move more efficiently and powerfully. Upper construction: Microfiber is high-tech syntheticsВ that lead the industry for the highest level of soccer, cycling road racing and mountain biking, moto racing and is now available in Vertigo quad roller boots. Microfiber is stronger and lighter than leather, water-resistant with no stretching for a true fit, even after it's broken in. 99% consistent so you get the same result with every boot. Liner construction: There are several different kinds ofMicrofiber. Our research on microfibers started in 1997 when we were the first to use it with Luigino Racing inline boots. The use of Microfiber lining has been a huge success and is now a standard in many performance shoe categories including our current competitors. The use of high quality microfiber lining improves the fit, feel and longevity of the boot. Features: AquaTech and Leather board counters Poron Padding Top-Grain Leather Soles (Stitched) ProBack Microfiber uppers & lining Ankle Powerstrap Sizes: 4 thru 12 (+1/2 sizes)