Hoka One One Cavu 2 Women's Running Shoes Placid Blue/Plein Air : The lightest style from the Hoka One One FlyCollection, the Hoka One One Cavu 2 running shoes offer a comfortable, responsive ride for your speediest runs. A seamless engineered mesh upper wraps around the foot providing comfort and a sleek, modern look. Upper: Open engineered knit upper provides a clean look, lightweight support and excellent breathability. Midsole:PROFLY(TM) midsole provides a cushioned landing and a propulsive take-off. Outsole: Rubberized foam ousole provides high rebound cushioning and traction. X-Shape design and siping provides traction and flexpoints.