มุมฉากลิ่ม

Wasn't sure a wedge would make much difference but it totally changed the angles I can work with. The EVA foam holds up without sliding around, and cleanup after is way easier than I expected.

The EVA foam is firm enough that I don't sink into it, but still has just enough give to feel comfortable. It holds its angle way better than the rolled towel I used to shove under there.

I was skeptical a wedge could make that much difference, but this thing is a game changer for positioning. The rugged EVA foam gives just enough support without feeling rigid, and it stays put during use. Worth every penny.