Bare Knuckle Bags Head simulating, Hand-Fist conditioning punching bag you hit with your bare knuckles

Head simulating Hand-fist conditioning punching bag you hit with your bare knuckles.
Conditions fist for hitting a head. Strengthens muscle, bone, ligaments, tendons, etc.
What makes these bags unique?
Simulates head
Size, weight, and hardness. And has movement.
The compression of the material can allow me to simulate hitting a forehead which can
break your hand. Or simulate a face which actually has a little give to it.
These bags hang and are made to move like a head will if you hit it. So you’re hitting a
moving target.