I bought these for summer shoes, mostly sandals.
They are gel. Even the arch part is gel, which means it just flopps around and has no arch support whatsoever.
It is obviously ONLY to be used on lace up shoes.
After I paid about seven bucks for them and took them out of the package I had to throw them out.
What a rip off!
I'll bet the gel gets too hot to wear in the summer, too.