Used in an indoor gymnasium for physical education classes once a week for two years. There is some peeling of the material at the toes. Overall, there is a feeling of use, but I don't think the dirt is a concern for shoes. These are easy-to-use ASICS shoes. The original inner soles were not used; different ones were used. The original inner soles are not included. ASICS shoes featuring a navy and yellow color scheme, made of mesh material for excellent breathability. - Brand: ASICS - Color: Navy/White/Yellow - Material: Mesh/Synthetic Leather - Sole Type: Rubber Sole Thank you for viewing.