NIB. Size 9 1/2 women’s The ASICS Men's GEL-Kayano 31 Sneakers come with a 4D GUIDANCE SYSTEM for adaptive stability that helps you experience a more supportive and balanced stride during your distance training. The polyester lining and engineered mesh upper improves breathability and the external back heel counter helps keep the foot stable and provide a more comfortable stride. With the Rearfoot PureGEL technology, the round toe sneakers help provide lightweight cushioning and softer landings. Its midsole implements FF BLAST PLUS ECO cushioning and OrthoLite X-55 sockliner improves comfort. Lace-up closure. Rubber outsole.