This foam tomahawk is a recreation of the weapon used by Connor in Assassin’s Creed 3. It’s 500mm by 225mm, nearly, and made from PU Latex with a fiberglass insert.
Is this good enough for LARPing? It’ll depend on your marshalls and local rules but the axe head is a loop and looks rather fragile to me. I wouldn’t encourage anyone to buy this and expect to be able to bosh people for a whole weekend with it. As a prop or way to keep cheeky players in line, though, is looks wonderful.