Building on the success of one of Merrell's most popular trail running shoes, the Agility Peak 5 provides updates to this already successful trail runner. In this latest version, the rocker is increased, weight is reduced to less than 10.6 ounces, and the heel cup is sculpted for better on foot comfort and less slip. Whether you are running an ultra, competing in cross country, or training for your next trail 5K, the Agility Peak 5 is your go-to trail shoe for any condition with maximum cushion and comfort. This sports shoe features a flat heel and a lace-up fastening. The uppers are made of 50% polyester and 50% polyurethane, the lining is 100% polyester, the cushioning is 100% polyester, and the sole is 100% rubber.