NIKE Free Trainer 5.0 644682-006 Performance Cross-Training Running Shoes ?

Hexagonal flex grooves in the outsole allow your foot to move naturally for improved agility and exceptional range of motion
The anatomically shaped heel is rounded to roll with the ground, promoting greater control to help you stay fast on your feet
The Dynamic Fit system is anchored under the midfoot and adjustable through the laces for customized lockdown and a secure fit so you can focus on your workout, not on your feet
Breathable mesh upper for comfort
Full-length inner sleeve for support and comfort
Phylite midsole for lightweight cushioning that's tough enough to double as an outsole, dramatically reducing overall weight