Cleaned at home. Mileage is approximately 50km to 100km. In good condition. Original price: ¥15,950 (tax included) This product is the latest in the "GT-2000" series, which supports many runners with its function to reduce the burden on the feet. It adopts the "3D GUIDANCE SYSTEM," which adapts to various running distances, balancing stability and comfort while improving the cushioning of the forefoot for a more comfortable push-off. The "3D GUIDANCE SYSTEM" is a complex functional structure developed by researching the movements of runners that change with running distance. It provides an appropriate slope on the outer side of the heel to make heel contact smoother. In addition, the midsole (the intermediate cushioning material between the upper and the outsole) has a three-dimensional shape that widens from the inner heel to the midfoot, which suppresses excessive inward rolling during running. Furthermore, by widening the ground contact area of the outsole, it supports stable footwork. The midsole uses "FF BLAST PLUS," a lightweight and highly resilient cushioning foam material, to achieve soft cushioning. It also incorporates "PureGEL," a shock-absorbing function in the heel to reduce the burden on the feet. The outsole uses a material with approximately three times the abrasion resistance compared to our conventional rubber in the rear, and a lightweight and abrasion-resistant material in the front. The upper uses "Engineered Monofilament Mesh," which changes the knitting method and the size of the holes depending on the part, enhancing lightness and fit. In addition, the structure that connects the inside of the upper and the tongue improves the sense of unity between the foot and the shoe, and the fit. Furthermore, the opening of the shoe has a lean-back (curved) shape that makes it easy to put on and take off, and reduces the stimulation to the Achilles tendon during heel contact. Following our unique design philosophy, "ASICS DESIGN," which consists of four components: user testing, science, innovation, and sustainability, we aimed for a structural design that is excellent for both the body and the mind. ※Sorry, the box is from Kayano 30.