NIKE Lady Free TR Twist Cross Training Shoes leather-and-mesh Rubber sole Breathable Heathered Fabric - This seam-free, lightweight fabric helps keep air flowing for breathability and comfort. Seamless Textile Upper - To help reduce irritation and provide excellent range of motion. Memory foam - At tongue for cushioning and ultimate comfort. Phylite Midsole - An ultra-lightweight, resilient, springy foam that's soft enough to offer plush cushioning and keep the shoe light. Deep flex grooves - For enhanced flexibility and a smooth, efficient stride.