The Oakley MOD PRK MIPS helmet builds on its skate-inspired, low-profile shell with MIPS rotational protection, giving park and freestyle riders a helmet that handles multidirectional impact without changing the shape that made the original work. Fixed ventilation and a removable goggle strap system carry over from the base model, so the added protection layer doesn't ask riders to give up any of the fit they already know. What Our Gearhead(R) Experts Are Saying:"I switched from the standard MOD PRK to this one expecting a bulkier fit, and the MIPS liner sits low enough that the helmet still feels like the same low-profile shell on my head. The 360deg Fit System's dial locks in just as evenly, so the only difference I notice is knowing the rotational layer is there."