IFME 12.5cm, used for about 3 months. asics 13.0cm, used for 1 month. Because IFME is designed for wider feet with a higher instep, the size doesn't feel that different. IFME has black marks on the insole. Asics has stains on the Velcro part. Please check the photos. I haven't done home cleaning, but I think the dirt can be removed by washing.