Price reduced again! Thank you for your interest. Experience sports science theory! These are evolved single-tooth geta! By using the unstable state of the single tooth, you can develop core-driven movements, strengthening your muscles and stabilizing your core. Step training using steps. You can actually do running and high knees, and learn to run without putting strain on your calves and Achilles tendons. Size: 24-28cm (Japanese shoe size) Geta width: 12cm Length: 13cm Height: 3.5cm (excluding thong) Soft rubber sole. Never used outdoors. Used only indoors. Using them for housework and other tasks at home will strengthen your core and improve your posture. May have a dieting effect? Please check the condition of the product in the photos. * The surface has been polished with fine sandpaper. Please understand that these have been used. #Geta #Sports #Core #PostureCorrection #AchillesTendons #DietEffect #Sprint #Speed #GETTA