[Elastic and Comfortable Material: these memory foam insoles are mainly made of EVA foam materials and the outer layer are made of cotton materials which are breathable and sweaty elastic and soft providing you with a comfortable feeling for the whole day Available for Lots of Shoes: these shock absorbing insoles are suitable for most kinds of shoes such as walking boots hiking shoes climbing shoes sports shoes leather shoes casual shoes flats and so on meeting your different needs in daily life "Trim to Fit Your Shoes: these replacement insoles are about 25.5 cm/ 10.04 inches long which are suitable for most mens shoes also available to be trimed into different sizes randomly providing you with much convenience" Anti Shock and Non Slip Design: the bottom side of the replacement shoe sole adopts a honeycomb design which can help to reduce shock and anti skid so that you can enjoy playing tennis outdoors with your friends or family "Sufficient for Replacement: there are 4 pairs of shoe inserts which are sufficient to meet your daily uses and replacement so that you can replace another one when your shoes insoles get dirty or missing"]