The little hedron bumps are just grippy enough to allow you to toe-in nicely on a steep wall. I am using these on a 35 degree wall and they feel solid even when paired with thin handholds. I like that you can rotate the holds to change the way you engage with the bumps. I also like that Atomik sells these and other footholds in sets of 5, allowing you to combine a wide variety of foothold shapes on a small wall.