Howdy again ...if you order centre-part the hair will be ventilated [tied -in] in that particular style and will not really be changeable by you. Freestyle allows you the freedom to `experiment` a bit, but remember two things.... if you get it styled/cut-in let`s say, left or right -part, and obviously a bit` swept ` to one side, if you later try to brush/comb it into a centre -part, it may not look quite right as the hair has been cut, so will be a little shorter on one side if you can imagine ? What I mean is , with a system actually ordered with a centre-part, your stylist will trim the hair to more or less the same length either side of the part and that`s the way it will stay...whereas a freestyle can be `trained`into any style really for your initial cut-in, but personally , I find it`s best then to seal the knots with knot - sealer, and `stick`with that particular `cut`/ style rather than re -arranging it every so often..hope that makes sense ? Second point-- The knots on a freestyle are not `set`/ tied into a particular direction, which allows you to brush/comb it into a style you like for your cut-in, but once that`s done, you should seal the knots [to help prevent shedding] and that will have the effect of `locking`the hair/knots [more or less] into that particular direction...... I still find I can generally change the overall look simply by using a bit of leave-in conditioner onto damp hair and you can kind of scrunch it up gently with you fingers or a gentle brushing and allow to dry naturally, even when it`s bonded to your head..... freestyle`s about the easiest to `work`with really ,if you like to experiment a bit from week to week...paul.