The Trek is made from high quality suede and finally makes the Fivefingers a year-round shoe. The sole of the Fivefingers Trek is designed to allow for use in difficult terrain. The quality leather processing makes use in the mountains or winter bearable: the heat insulation is significantly better in the Trek than for all other models. The Trek is available in black or brown. The Trek model is similar to the KSO. It is closed on top and secures with an adjustable buckle. If you are interested in this model please make a reservation with us!there have all colors and all sizes which you need,welcome to order on our site,It is the best choice for you!