Multiple use Insole / Multiple use Insole

Multiple use of insoles, when the first layer wear sometimes lose slip effect, could easily lead to slipping and various dangerous, this insole to wear after the first layer torn off and return to the original slip force, to reduce the risk of occurrencenot only used in sports shoes, including the use of a variety of shoes, not in order the insoles wear to buy new or often repair the soles, when a loss of slip force immediately torn off