The RX 100 W could be just what the boot doctor ordered, thanks to Lange’s fit technologies, including width choices (choose between 100 mm last or a lower volume 97 mm) and a Control Fit liner, which includes padding around the ankle, saddle stitched seams to avoid pressure points and an instep pocket designed to increase circulation. Other details include an upright stance to reduce leg fatigue, a mono-injection shell and ultra-grip replaceable soles.