Altra Women's Fwd Via PurpleAltra Women's Fwd Via Purple Go the distance in the Altra Women's Fwd Via Purple. With max cushion, rocker shape geometry, and a low drop, this shoe is designed to push you to your limits. The brand new supercritical Altra EGO FLO midsole foam, infused with nitrogen, provides lightweight and responsive cushioning for a comfortable ride. The engineered spacer mesh upper adds breathability and style, while the FootShape fit gives your toes room to move.