The new Brooks Glycerin 14 provides neutral runners with the ultimate cushioning that has become a trademark of this line. This model includes an updated upper with 3D Stretch Print that offers the most personalized, adaptive fit we've seen yet. This new design is sure to keep runners happy from their first mile to their last. Upper: Conformable saddle construction provides a snug fit. 3D Stretch Print overlays add structure and adaptive stretch. Padded tongue and heel collar enhance comfort. Lace-up front offers an adjustable fit. Midsole: Super DNA midsole with Omega Flex Grooves provides optimum adaptive cushioning. Soft, plush interior provides a comfortable feel at all times. Removable insole. Outsole: Rounded heel offers better alignment, minimizing stress on joints. IDEAL Pressure Zones disperse impact for an effortless ride. Blown rubber forefoot for better traction.