Ultrafly 6 ST-6 and the closed-cell construction allows

and the closed-cell construction allows water to drain quickly

while the front hook fastener connects to the D ring at base of the laces

while the redesigned upper delivers the signature Topo fit with excellent breathability—delivering a smooth

Our critically acclaimed Vibram® Megagrip outsole offers superior traction on all terrain

Ultrafly 6 ST-6 and the closed-cell construction allowsWOMEN We freshened it up from top to bottom to amplify the comfort and light stability thats been the foundation of Ultrafly from the start. With even more cushioning than its predecessor, we redesigned the medial post to now wrap the heel to ensure smooth stability throughout. The ZipFoam midsole continues to evolve, now providing an even more responsive ride. Additional rubber coverage on the outsole improves durability and traction, while