Topeak Tubi Master+ with 16G CO2 Cartridge new in this helmet is packed with

this helmet is packed with MTB-friendly features to make it a trail rider's dream lid

and 80 mg of magnesium per liter)

the MET Trenta Mips is able to slide relative to the head in the case of a crash

Function: Temperature compensation

Rear Derailleur Mount Type: Shimano Rear Direct Mount

Topeak Tubi Master+ with 16G CO2 Cartridge new in this helmet is packed withA compact, all in one tubeless tire repair kit and CO2 inflator makes quick work of repairing flats on the road or trail. CO2 inflator head fits Presta & Schrader valves and carries a single threaded 16g or 25g CO2 cartridge. Tire reamer, serrated knife and plug insertion tools fold away into tool body while a special concealed compartment holds repair plugs. A mounting module lets Tubi Master+ attach to seatposts or bike frames with included strap.