The rattan sticks are from bloodsport.com and the polypropylene sticks are made by Cold Steel (got mine from manventureoutpost.com). This video demonstrates the weapon flex that can be found in both. The polypropylene has a significantly greater amount of flex than the rattan. Remember, flex is neither bad nor good - it just depends on what the application is and what you're comfortable using. Find my review on the Cold Steel sticks here: martial.jessecrouch.com Check more out on martial.jessecrouch.com