The SG_10 is a Premium boot, the kind of boot that real racers wear. Dual composite rubber soles, lightweight alloy, replaceable buckle system, exclusive Gaerne “Grip Guard , floating “Razorback with a built in ankle alignment system, supercross shank as well as a heel bumper and memory cell PU inner foam liner that completes the construction for an unforgetable fit. Compare the features and you will see why GAERNE is leading the way! A soft, comfortable, anatomic fit with the new indestructible P.U. memory cell interior foam. Bio-foam upper/inner liner and a shock absorbing inner footbed liner adds to the pillow-like interior feel. The super strong Razorback Pivot System surrounds the ankle while at the same time flows with your natural movement to ensure a great fit.