Featuring Mammut Flextron Technology which supports the natural rolling of the foot and Mammut Georganic 3D Technology for maximum comfort.The Sapuen High boots are a very comfortable pair of boots for all-day wear when out hiking.WaterproofLightweight10mm dropMammut Flextron TechnologyMammut Georganic 3D TechnologyDouble Engineered Mesh UpperGORE-TEX Performance Comfort Footwear LiningVibram Flextron II Outsole