Waterproof, breathable yak leather and Gore-Tex keep the Ecco Biom Terrain Akka GTX's in-shoe climate comfy. The innovative Akkas are inspired by "barefoot" shoes but have a sturdy, protective shell. The low-to-the-ground, rounded sole encourages a natural gait: Instead of being fused into a stiff boot, your foot rolls naturally off tricky terrain. Strategically placed ankle inserts add stability. [$230; eccousa.com]