This medium width top of the range, the WR859EU, is the NBX versatile running shoe that offers a mixture of cushioning and stability, its ideal for mild pronators who require cushioning and support.New Balance ranks the 859 the best shoe for support and 2nd best for cushioning.New Balances very own ABZORB SBS is a type of cushioning system that absorbs the shock and displaces the energy to soften the impact of the foot whilst running. This is ultimately achieved through a polymer structure and unique cored design which is located in the heel. This cushioning technology provides the runner a high-level of support and comfort.Durability is maintained with New Balances NDURANCE, a rubber compound for maximum durability in high wear areas of the heel. The comfort provided is enhanced with the PHANTOM LINER and the Lightning Dry which works well together by managing to transfer moisture to keep you dry as well as providing an anti-abrasion fit.The MEDIAL POST material is a technology that extends from the heel down to the ball of the foot offering stability to the foot as it rolls inwards.The STABILITY WEB situated in the arch, offers support to the mid-foot as well as reducing the weight of the shoe. This provides torsion control as well as preserving flexibility in the forefoot. In additional this technology New Balance has associated the Extended Web to provide enhanced stability.The TS2 is a technology that ultimately offers support for a smooth heel to toe transition. The extra support in the mid-foot combined with a slightly softer dense material in the heel facilitates the neutral running gait for enhanced performance.The ACT EVA primarily is a cushioning technology that uses a lightweight midsole material which offers superior cushioning and a lower rate of compression set.The Unique NLOCK lacing structure integrated with this shoe makes this piece of footwear a secure fit to the foot. It provides an optimal fit, support and security to the mid-foot. Suitable for: Running and Walking. Upper:Synthetic;Mesh;Reflectivity. Outsole:Solid Rubber;Blown Rubber;Ndurance. Insert:Ortholite Anti-Bacterial Insert