The peakfreak xcrsn boasts columbias incredible new outdry technology which dispenses with a membrane by making the outer surface of the boot completely waterproof thereby drastically saving weight by using less materials an eliminating surface moisture gathering in the shoe exceptionally hardwearing and comfortable thanks to a leathertextile upper its also supportive and grippy on tough terrain due to the springy techlite midsole and omni grip rubber outsoleactivitywalking hiking ca