If you don't like to run in the rain or mud The North Face Women's Amp Boa is your ideal fair-weather trail running companion. The sole shank crash pad and other support features are identical to the top-shelf Endurus XCR Boa but the Amp Boa has bi-level highly breathable air mesh panels instead of the waterproof GORE-TEX® stuff. The North Face Women's Amp Boa is also a running shoe specifically dedicated to trail running. That's because it has a softer ultra lightweight Perimeter UltrATAC rubber outsole that uses a softer compound than running shoes made to pound on asphalt. One of the best and most distinguishing features on the Amp Boa is the Boa multi-adjust lacing system a customizable closure above the gusseted tongue that allows you to cinch up the fit tighter exactly where you need it. Other components like the Roll Control medial heel wedge and shock-absorbing heel X-2 O2 air pod help keep you on your feet across rolling terrain whether you're among red Sedona rocks or the cooler higher latitudes of the Appalachian Trail.