It supports the arch of the foot and supports your body weight and reduces the burden and fatigue on your feet. Easy to put on, comfortable and fit so you can use it all day without feeling discomfort. Made of breathable material, it can be used all year round. By supporting the arch of the arch, it reduces impact and reduces stress on the ankles, knees and hips. Especially recommended for those who tend to get tired feet, or those with flat soles of feet. The upper belt is thin, so it wont feel discomfort even when wearing shoes. For those who feel tired of their feet when standing work, walking or jogging can significantly reduce fatigue. The urethane foam core material is soft and resilient, so it can be used from dress shoes and casual shoes to tabi bags. We recommend wearing it over your socks when you go out.