1High elastic cotton, breathable, buffer and decompression;High quality velvet fabric can absorb sweat and breathe freely. 2EVA hard density material can provide strong support, absorb the impact of the foot during movement or walking, and slow the drafting movement, which can reduce pain. 3Nylon inlaid arch support frame (support foot arch heel, which is not easy to deform after repeated crushing) 4For severe flat feet/high arches/foot eversion when walking or standing, arches sag and legs tire easily, which can lead to other symptoms in the long term. 5Threepoint mechanics, forepalm arch heel, threepoint support, longterm wearing can alleviate arch pain and improve walking, pronation, flat foot, etc.