While the most important characteristic in Keens Targhee II trail running shoe is the stability, the innovative breathable comfort steals the show when youre on the go. Unlike other trail running shoe manufacturers who opt for using the same waterproof membranes found on practically every running shoe on the market, Keen took a route less traveled and used a new eVENT membrane fabric with Dry System Technology for better breathable comfort in wet weather. The difference is one that you can feel--most waterproof/breathable technologies require that perspiration condenses to moisture before it can pass through the membrane. eVENT membrane fabric allows sweat to pass through in vapor form, so your feet dont feel soaked in sweat like you would in other weatherproof trail running shoes. Besides the dry socks, the Targhee II is exceptionally stable. In the heel youll find Keens S3 heel support structure, a special shock-absorbing design thats engineered to support your foot on impact, minimizing your chances of twisting an ankle on rolling terrain. Keens Targhee II is a great shoe for covering big distances on damp days throughout the spring, summer and fall.