Ultrafly 6 ST-6 while the closed cell construction

while the closed cell construction allows water to drain quickly

Our ZipFoam™ midsole delivers a lightweight and responsive ride

Strategically placed rubber on the outsole offers excellent durability and traction in high-abrasion areas

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

MEN When a shoe is perfect as is

Ultrafly 6 ST-6 while the closed cell constructionWOMEN 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