adidas Performance Women's Solar RNR Boost Running Shoe 100% Synthetic Imported Rubber sole Lightweight runner featuring molded three-stripes synthetic midfoot and heel overlays 10.5 mm heel-to-toe differential Breathable Air mesh upper and mesh lining FITFRAME 3D-molded TPU heel stability ADIWEAR outsole for high-wear durability Weight: 7.8 ounces (size 7)