The chart below outlines the recommended flex you should be playing with based on your height and weight:
THE PROPER FLEX CHART
Understanding Flex - The flex rating on a stick is the amount of pounds of pressure it takes to bend the stick one inch. We call this "loading the stick". It takes 25, 35, and 45 lbs of pressure to "load" a pro flex stick as compared to 50 lbs of pressure to load a normal junior stick.
Player's Height and Flex - the taller the player the more leverage he/she has to "load" the stick. You will see in our chart that shorter players require less flex than taller players.
Note: this is just meant to be a guideline. As players, we know that personal preference is still important, but this is a great starting point.