"No doubt if Daniel approves"

"Legit profile"

"photo of purple belt promotion"

"Driss is one of our top purple belts in the academy. Super unorthodox, creative grappler. Awesome training partner. BEAST!"

"Despite not knowing him personally - I trust his instructors and the standard of his gym."

"Mr. Boublali trains at Carlson Gracie Amsterdam with Daniël Bertina. Legit for sure!"

"If Mr Bertina gives his endorsement, how can I argue with that?"

"Confirm by his Coach, Well documented, Cheers from Vietnam "

"We train together and I learn a lot from Driss. Has a lot of knowledge and brings a creativity to the mat you do not experience often. Always fun to roll with and happy to share his knowledge!"

"Daniel's student"