Before he had all of his fancy toys, Batman had to start somewhere. His first self-defense tool was probably a set of brass knuckles like these. They slip over two fingers and makes your punches feel like they came from the fist of Iron Man.
This handy tool is made of a titanium alloy and weighs just under an ounce. Honestly, it doesn’t look like it would be all that effective and it might hurt you as much as the bad guy. Still, you have to start your superhero career somewhere.
If they don’t work out for you, you can always get your multi-million dollar company to make a better version and have your butler send these back to Amazon.