The RX 120 combines the ONLY 100mm lasted mono-injection shell on the market with Lange's Control Fit Technology providing big mountain skiers with a powerful, comfort concious boot. New Control Fit Technology gives this boot the best "out of the box fit" imaginable. The mono-injection shell allows for easy customization when necessary while Lange's Control Fit Liner addresses traditional hard-to-fit issues. The true lasted liner, one piece toe box, instep pocket and saddle stitched seams alleviate common pressure points and increase circulation. Additional features like Ultra Grip replaceable soles and elastic power straps help meet the demands of hard charging freeskiers. The RX 120 delivers a combination precision fit, power and comfort that no other boot in it's class can match