Already an impressively light, yet stiff, 4 buckle boot, the 2.0's have an additional five percent more stiffness thanks to additional strength added at the cuff pivot and back-calf area of the boot. This translates to a true 120 flex as compared to the originals. For the weight conscious tourers among us, these boots weigh in at 1445 grams/boot and have a 60 degree range of motion, making them some of the lightest and stiffest touring boots on the market. The cuff and tongue are made out of light and burly Grilamid, with a Pebax shell, and Vibram sole. Whatever uphill binding you have, these boots will fit it, including your older siblings ancient and heavy step-ins.