Sidi, always the technology market leader, is taking race boots in an all new direction with the Mag-1. Combining an innovative internal bracing system with well chosen design elements and materials to create a very lightweight, yet ultra-protective race boot system. Micrometric Tecno-3 magnetic closure: The Micrometric Tecno-3 magnetic closure mechanism is easy and quick to use as well as being highly adjustable and lightweight. The Tecno-3 Magnetic closures close the boot with an extremely resistant stainless steel wire, which is hooked to the clip with the aid of a magnet. Carbon Fiber Brace System: The Mag-1 incorporates an internal support system which is comprised of carbon fiber beams, making up the frame of the boot. This system allows for excellent movement front-to-back while limiting side-to-side action. Light Weight: