It won't be a problem when the trail ends but your run hasn't when you're wearing the Mammut Women's MTR 201 Pro Low Trail Running Shoe on your feet. Taking its mountain expertise into the realm of trail running, the Women's MTR 201 Pro Low Trail Running Shoe incorporates Mammut's intimate knowledge of mountain environments into a light and durable trail runner for those who like to move fast through the mountains.The upper is made of a breathable mesh that is supported by Mammut's Base Fit technology. Base Fit optimizes support while minimizing bulk for a fit that's light and supportive. The MTR speed lacing system ensures a comfortable and secure fit with just the pull of a lace, while memory foam in the heel provides even more comfort. The Strobel midsole features Stone Shield protection against the rough and rugged terrain you'll find above treeline, while Liquid Rubber toe bumpers offer additional protection. With Mammut's Rolling Concept, the shoe utilizes several different rubber compounds in the sole to give the shoe a natural, rolling feel in each stride. A 9mm drop makes these shoes great for midfoot strikers.