These shoes are now in their fourth edition and are only getting better and better. This version features a revolutionary FUTURELIGHT ™ ventilated waterproof technology. Thanks to a nano-spun vented membrane, you can take advantage of waterproof shoes without getting hot, sweaty feet. The shoes are also comfortable in several ways. Resilient flood bed of OrthoLite® X35 ™ Hybrid ™ which dampens but also responsive and works with the midsole of FastFoam ™ to maximize energy absorption for more efficient walking. The shoes are specially designed to move quickly along tough joints. The heel design is optimized for rough, rocky terrain, Vibram® Megagrip ™ provides exactly what the name implies - grips on all surfaces, wet and muddy as well as dry and loose - and the protective toe caps and heel overlays help prevent damaged toes and heels. If you do not want to be weighed down by overly sturdy hiking shoes with knurled edges, then these are for you.