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"As a producer of grappling instructionals myself I don't think that you can find better material than the Jen pin escapes series."
- Stephan Kesting, www.grapplearts.com
"For DVDs, I'd recommend checking out Michael Jen's stuff. He's got the best BJJ instructionals I've seen, and they're a great value!"
"He doesn't just show specific techniques, but also explains common principles that can be applied to many techniques. He also explains and demonstrates WHY these principles hold true. He never makes any assertion like "lean this way" or "put your hand here" without demonstrating why. This is very important. Many instructors will tell you "always do this" or "never do that", but they don't explain why. It is crucial for your understanding of jiu-jitsu to know WHY you do things."
- Andrew Yao
"Mike Jen's tapes are the best Guard pass tapes out there."
- Bill Cogswell
"I just received and watched [Jen]'s Butterfly Guard Tapes. As with all his tapes the instruction is great. [Jen] covers sweeps, counters, submissions, transition to, etc., worth every cent. Unlike other tapes I've seen who's contents doesn't live up to the hype, [Jen]'s tapes have no hype but great content."
- Stuart Igarta