Ultrafly 5 Men's headwear we learned that simple wasn’t

we learned that simple wasn’t just better for elite athletes

2% Elastane *Specific percentage of recycled nylon will vary as we transition to 100% recycled nylon in future seasons

The signature waffle-inspired rubber outsole ensures exceptional traction and flexibility

Pulse Ox is not a medical device and is not intended to diagnose or monitor any medical condition

Anatomically shaped BIRKENSTOCK footbed made from EVA

Ultrafly 5 Men's headwear we learned that simple wasn’tMen's Topo Ultrafly 5 :: A personal cheerleader for your feet. Your updated Men's Topo Ultrafly 5 cross trainer is giving your regimen the lift it needs. Light pronation support? Check! A fresh 30x25 mm platform with an extra 2 mm cushioning? Double check! The midsole is your gentle guide and the Zipfoam formula? Softer, lighter, and more responsive than ever! Plus, it's eco chic with a recycled engineered mesh upper (queue the standing ovation!).