Hoka One One Hupana Slip Women's Running Shoes Nine Iron/Steel Grey : The Hoka One One Hupana Slip is a responsive shoe that will add bounce to any workout. New four-way stretch mesh provides support, breathability, and a secure, sock-like feel. The Hupana Slip is the perfect lightweight shoe for everything from interval training to treadmill workouts. Plus, its casual style transitions easily to everyday wear! Upper: Four-way stretch mesh for breathable comfort. Elastic strap provides support and sock-like fit. Front and back tabs for easy on/off. Midsole: Balanced Meta-Rocker for versatility during all activities. R-BOUND midsole for a dynamic, responsive ride. Outsole: Siped outsole for traction and precise flexibility.