Synthetic mesh uppers enhance breathability and quick-drying performance; synthetic overlays offer supportNew lace design evens out the lace pressure to create a snug fit, while 3D Fit Print adds a lightweight, flexible, no-stitch fitNylon and spandex linings absorb and disperse moisture for enhanced comfort; Internal Support Saddle (ISS) helps wrap and hold feet in placeMidsoles feature BioMoGo polymer alloy foam, which provides cushioning, energy return and reduced foot fatigue; nontoxic additive helps midsoles break down in landfillsDNA cushioning uses high viscosity liquid to react instantly to your every step, providing a custom amount of cushioning for your running styleProgressive Diagonal Roll Bar triple-density medial posts work to control excessive pronation and balance transitions from midfoot to toe-offOutsoles on the Brooks Adrenaline GTS 14 Road-Running Shoes are constructed of a mix of rubber compounds to maximize longevity and grip