Under Armour Micro G Sting TR Nite Brite Shoe - Women's Synthetic-and-mesh Upper: Fast-drying, lightweight, breathable upper fits your foot like a glove Molded, perforated foam panel in the heel adds support and a lockdown fit Midsole: Low heel and forefoot midsole encourages the foot to strike on the midfoot/forefoot, to work with natural efficiency Full-length Micro G foam turns cushioned landings into explosive takeoffs Footbed: Molded 4D Foam footbed conforms to your foot's exact shape, eliminating slippage