2 easy choices to keep it simple.
The sleek pure leather insole works well when you don't have a lot of spare room. The black leather tops don't show marks. Which means your shoes always look nice inside when you take them off.
For those who need a bit more support or want to fill out a loose shoe. The Poliyou Multi Purpose Insoles are an excellent choice. These versatile insoles can be used in shoes, boots and sneakers.