This is an extremely effective system for those who desire to survive a serious attack on the street. Professor Steiner has taken the best of World War II British Commando hand to hand tactics, kenpo karate, combat ju jitsu and street fighting and really anything that works into a comprehensive system that has been battle tested and verified to work by police officers from New York City to Seattle, as well as people from most walks of life. Be forewarned that Professor Steiner's system is brutal, and if your the typical politically correct liberal Seattleite you may find the system to be too brutal. But if you want a good chance to survive when you absolutely must stop an attacker or die, this is the system for you.This is a non contact system, so don't worry about getting hurt while learning. Professor Steiner is very careful to make sure nobody gets hurt. He is a good teacher with an outstanding system.