The Norvan SL GTX is one of the lightest GORE-TEX trail running shoes ever made. It combines a comfortable, hardwearing TPU mesh upper with a waterproof GORE-TEX membrane featuring lighter weight, more breathable GORE Invisible Fit technology. The upper easily folds down for compact packability, and the outsole has reduced weight with a Megagrip rubber compound for confident footing on wet or dry trails.