Altra's Provision 6 running shoes are made from breathable engineered mesh with a Balanced Cushioning platform for alignment and form, and foot-mapped FootPod Technology to keep you comfortable as you pack on the miles. Breathable engineered mesh upper with synthetic overlays Padded tongue and collar Lace-up front Breathable mesh lining FootShape comfort technology gives feet more room to sit naturally Removable cushioned footbed Balanced Cushioning platform places heel and forefoot at an equal distance from the ground for better form and alignment Altra EGO foam midsole adds bounce for a cushioned, comfortable ride GuideRail encourages natural foot placement by providing guidance Innerflex grid-like grooves in the midsole are designed to provide flexibility and movement FootPod Technology in the outsole map the bones and tendons of the foot to encourage natural movement Grippy rubber outsole Imported