Thin Line Defense talk about the Ops-Core FAST SF Next Generation Helmet and the upgrades done to it... "We tear into the updated Ops-Core FAST SF Ballistic Helmet to see all the new changes in the newly released version. With the lightened shell, lockdown liner, and headlock flux system, there is already a huge push towards comfort, particularly when paired with a headband-style earpro. This looks like a huge winner to me, and all the new bits can be retrofitted into the old style, too! Oh, and that ARC power path rail!"