1Made of velvet, it is soft and comfortable to wear, and does not shed hair or ball. 2EVA has excellent characteristics such as good shock resistance, nontoxic and degradable. 3Using ushaped heel cup design, can fit the heel better and relieve the pressure on the sole. 4The threepoint force design of the arch of the foot balances the medial arch, lateral arch and lateral arch while walking, making walking more comfortable. 5This product is very suitable for people who need to walk or stand for a long time.