The North Face: Men's Arnuva 50 Boa Trail Running Shoe - Great for covering long distances in summer heat and high humidity, the Arnuva 50 Boa Running Shoes have a Boa multi-adjust lacing system that gives you the freedom to quickly and accurately modify the fit on your shoes without pressure points or the hassles of re-lacing prior to racing Going the ultra distance just got a little more comfortable thanks to these Arnuva 50 Boa Running Shoes from The North Face. Most running shoes opt for laces and various versions of cordlocks, but The North Face Arnuva 50 Boa Running shoe uses a thoughtfully engineered Boa system that allows for minute adjustments for optimal closure over your foot just the way you like it and every time that you run.