Nike Women's Free 5.0 TR Fit 4 TeamThe Nike Free 5.0 TR Fit 4 Team is a training-specific sneaker that's lighter than its predecessor and is constructed with Engineered Mesh. They also have Flywire technology, an inner sleeve for support, phylite midsole, durable rubber pods on the heel and forefoot, and a herringbone traction pattern on the outsole.