Inside, HJC uses SpeedCool moisture-wicking fabric with "ACS" (Advanced Channeling ventilation System) on the outside to bring in the breeze. The material is antibacterial and the liner is easily removable, as well as styled like a super-duper top-end helmet. The fit was better for more of an oval-shaped head, something that in helmet terms has been called a "race fit." On most riders' heads, the medium helmets we sampled were just a bit on the large side of medium and average in the cheek area. You could feel the venting as well as almost every other helmet claiming venting features, but for sure it is not a "hot" helmet. The padding leaves plenty of room for air space and venting while still giving a snug fit on the skull, and there is padding on the chin bar for added protection. The graphics and styling elements were all high-end and well integrated into the design without hindering function, and the linings stayed glued in place. And after a fair bit of use, the paint (or graphics, really) resisted scratches as well as any helmet out there and cleaned up great. The eyeport is large enough for the bigger goggles around, too.The Frenzy is both Snell 2010- and DOT-approved (except XXXL is DOT only) and is available is sizes ranging from XS to XXXL in 14 color combinations. The shocker? This helmet is priced at $139-which blew us away. We did not crash in it hard enough to put it to a random, though applicable, impact test yet, but we have as much confidence in this helmet as any other that fits properly and passes the standards. So if the HJC Frenzy CL-X6 fits you, we can say wear it.