Here is a good intro video that discusses the differences between the traditional
Prochoice V6 & New Kid on the block V9 Hard hats

 

Please note that both the V6 and V9 hard hats can come in both a Pushlock OR a Ratchet style harness. The standard harness supplied with our V6 and V9 hard hats is the push lock model shown. The ratchet style harness can be requested for an additional $4.40 inc GST