These are in Excellent Used Condition. The only flaws are staining on the insoles, which I have laundered but can always be replaced. And a small scuff on the right toe, but it is completely unnoticeable due to the splatter type design on the shoe. Shoetrees not included. The new gel-kayano 23 features our dynamic duomax support system, set at an angle to support and engage the foot only when required. With improved fit, the new shape not only holds your heel better, it holds the entire foot better while providing superior toe spring. Convergence gel tech and flytefoam technology make the new lighter-weight, innovation in the gel-kayano family our greatest adaption yet. Textile / Synthetic upper Rubber sole Impact Guidance System Tech: ASICS design philosophy that employs linked componentry to enhance the foot's natural gait from heel strike to toe-off. FluidRide Midsole: provides the ultimate combination of bounce back and cushioning properties with reduced weight and exceptional durability. FluidFit Upper: upper tech combines multi-directional stretch mesh with stretch reinforcements that adapt to the athlete's foot, creating a truly customized glove-like fit. Heel Clutching System Tech: Exoskeletal heel counter provides improved support and creates improved heel fitting environment. Rearfoot and Forefoot GEL Cushioning Systems: Attenuates shock during impact and toe-off phases, and allows movement in multiple planes as the foot transitions through the gait cycle.