Rotational liner: The helmet features Leatt's 360° Turbine Technology which has been proven in testing to reduce peak brain acceleration by up to 30% at impact speeds associated with concussion

CPSC Bicycle

Tubeless Ready: Yes the Mazza is tubeless ready

Suitable for front and rear derailleurs

they offer all comfort and grip you are looking for

Wolf Tooth ShiftMount Adaptor - Right Only - Shimano I-Spec EV Shifter to 31.8mm Bar Clamp - 12 Speed PDP|PLP|Brake Rotor Type Rotational liner: The helmet featuresDeclutter your cockpit with a Wolf Tooth ShiftMount Adaptor. These handy mounts allow you to integrate SRAM and Shimano shifters with several different brakes from Shimano, SRAM, and Magura. Handlebar space is prime real estate and the ShiftMount seamlessly integrates brakes and shifters for a clean look. Mount Types: ShiftMount naming convention is [shifter type brake type] MM ISII is for a SRAM MatchMaker shifter mounting to a Shimano I SPEC II