At a time when everyone is rewriting the rules of how the world works, the 4.ZEROGRAND is rewriting the rules of how a loafer works. Engineered with systemic layers of proprietary GRANDFOAM that provides all-day comfort and delivers a plush ride, while deeper flex grooves offer exceptional on-the-go comfort. A lightweight yet durable, full-length TPU outsole offers all the traction you need. Fit - If you have a lower instep or narrow foot, consider sizing down by half a size for a more ideal fit.Leather uppers.Multi-layered foam cushioning provides a well-balanced ride and greater support.Durable and lightweight TPU outsole provides enhanced underfoot comfort, while deep rubber flex grooves ensure a more natural feel.