The waterproof version of the DYNAFIT ULTRA 100 offers maximum cushioning, just as the non-GTX version does. This trail shoe was developed for all athletes striving to conquer ultra long distances. The maximum volume of the ULTRA 100 GTX Trail Running Shoe guarantees a comfortable fit even after hours of running on challenging trails. During the development of the ULTRA 100 GTX midsole, cushioning was the main focus so runners could maintain comfort through hours of running. Combined with a POMOCA outsole, ultra-runners get excellent cushioning and superb grip on all surfaces and conditions. With the Invisible Lacing system, a stretch lace cover adds increased protection and keeps dirt and pebbles from getting into shoes. Another feature of the ULTRA 100 GTX is the DYNAFIT Heel Preloader Technology – a design element that improves heel fit. With all of this technology, plus a GORE-TEX Invisible Fit membrane, the ULTRA 100 GTX is the perfect solution for your next, long trail run – no matter what the weather.