About this item EPP in the lower part of the helmet improves durability and sustainability, while an EPS upper keeps weight low The lower part of the liner features an injection-molded cage for extra strength and stability The outer shell is constructed from PC to give exceptional durability The Race Lock integrated adjuster makes it easy to find a comfortable, secure fit A patented breakaway peak will snap off the helmet in a fall, enhancing neck protection The smooth underside is shaped to house a GoPro mount