The 4.ZeroGrand is engineered with all-new multi-layered foam cushioning that 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. Proprietary Stitchlite knit breathable upper with wing detailing. Single density foam cushioning provides for a well balanced ride and greater support. Durable and lightweight TPU outsole for enhanced underfoot comfort with deep rubber flex grooves that provide a more natural feel.