Everyone will hate this idea, but I'm really close to pulling the trigger on a truly hair-brained scheme

I'm thinking about buying one of these d3o beanies this winter.

When the weather gets better I'm going to tear it apart and sew the protection into one of these.

If it doesn't work I'll be out $170, but that cap fits me well. It actually covers the back of my head and comes within an inch of my ears. Helmets won't do this on my head. Helmet manufacturers are a joke. Their products only fit the tip top of the bell curve.