Building on the success of the original, the MQM Flex 2 GORe-TeX now features tear-resistant uppers, a flexible cushioned midsole and Merrell’s mountain-grade Quantum Grip sole. Retaining the quick and nimble feel that made it so popular in the first place, it combines the best features of a trail runner and a hiker into one impressive shoe.Made with GORe-TeX Invisible Fit technology, the construction has an improved GORe-TeX membrane alignment, reducing weight and pressure points while increasing dry-out times. The result is a waterproof shoe that can provide the comfortable fit and feel of an unprotected style.