Woven upper materials and precision construction promote airflow and cooling. A finished jersey stitch in the topline area allows ease of entry. Tight knitting in the forefoot area improves medial / lateral stability. Leather detail at the heel. Anatomically-contoured energy foam sockliner cushions as it supports weight distribution. EVA midsole and rubber outsole. Integrated motion outsole provides ultimate forefoot flexibly. Flex welt provides unrestricted movement and flexibility. Grand.ØS dynamic energy foam is designed to comfort and propel each part of the foot.