Fly Racing Evolution Clean Pants Evolution is proof that not all racewear is the same. FLY designers pushed beyond the boundaries of racewear technology, fit, & finish to create a revolutionary design. Exclusive technology such as our 2D Buckle System®, Zipper Lock System, & the introduction of Magnetic technology represent a new level of innovation in performance racewear. Magnetics – pushing technology forward, FLY Racing introduces patent pending magnetic technology, for the first time ever, into MX pants Patent Pending 2d Buckle System® – flattest buckle system ever made in MX pants; built for safety, strength, & maximum adjustability; invented by Fly Racing, & the first of its kind on the market Zipper Lock System – exclusive zipper lock system keeps pants closed & secure Stealth Vent – zipper located on each leg allows for adjustable ventilation Advanced Liner – stretchy Lycra® seat panel sewn to a breathable light mesh reduces pulling Advanced Ventilation – highl