ULTIMATE COMFORT AND FORCE REDUCTION PROTECTION. The Leatt 5.5 FlexLock boot, was a 3-year project with long term development and testing using Leatt Pro athletes from all over the world! The 5.5 boot is a real head tuner when it comes to looks and style, but the design brief was comfort and protection also, and Leatt nailed it first time. As you slide your foot inside the boot you instantly feel the plush interior and quality of the materials used, it’s like putting your feet inside your favourite shoes or slippers! Leatts adjustable FlexLock system reduces forces to the ankle by up to 37% and the knee by up to 35% by Locking out the ankle movement when over flexed, giving you that feeling of security. With great feel of the frame, gear lever and rear brake, these boots instantly feel so good. You must check out the SlideLock Velcro function it really is ground breaking in security fastening boot technology.