I got these with some Dynafit boots in a plastic bag. Does anyone know what they are for?

They don’t half have some interesting stuff that comes with boots. No idea what they are though. Anyone know? Which boots did they come with?

they look as tho they’d slide into the back of the boot, where you dynafit ski binding pins will go into the boot.  as if they are some kind of protector.

I’d guess, in order :

1. at the top and rear of the boot to add some forward lean
2. at the front near the tongue to increase stiffness
3. ... I forgot between here and the sofa.......

I looked more closely and they have numbers from 1-10 on them. 5 Red and 5 yellow. I thought they might be different sizes or stiffness but they all appear identical.

As other have mentioned, I reckon that they allow you to adjust the stiffness of your boot, and will probably go somewhere on the front tongue. Scarpa also has a plastic intergangeable piece on the front to adjust stiffness on some boots.