This is an incredibly comfortable insert. I am typically a size 8 in regular tennis shoes, so I did have to trim the edge for these to fit properly in my shoes. The inserts hugged the shape of my foot perfectly. The only downside to inserts in general, not even this particular style or brand, is that it makes your shoes significantly tighter and you naturally sit higher in the shoe as a result. However, it's a sacrifice that is worth taking for the level of comfort and support you get from these inserts. I've had the fancier kind that you stand on machine to get the exact type of insert you need (they are pretty expensive too as a result) and these definitely rival those at a fraction of the price.
