Based on customer reviews, we recommend purchasing a half size larger for this model. Saucony Originals Jazz O: Since 1981, the favorite sneakers for their comfort, lightweight design, and unmistakable style. These shoes are made of soft suede with nylon inserts. The ultra-lightweight two-tone EVA midsole offers the perfect combination of stability and cushioning. Designed to take you beyond the ordinary and add character to every step. TECHNOLOGY Fabric lining and removable insole The EVA midsole provides excellent cushioning and shock absorption. The rubber outsole, with the classic Saucony Originals triangular pattern, ensures excellent traction and wear resistance.