On running Cloudflow Womens Shoes size 8.5 Sole material Ethylene Vinyl Acetate Outer material Synthetic Inner material Textile Closure type Lace-Up About this item Breathable, adaptive and supportive engineered mesh upper Breathable textile lining for comfort Removable insole for cushioning and support CloudTec cushioning technology active only during the foot strike Unique, lightweight and flexible Zero-Gravity EVA foam sole