The Lazer Z1, Lazer's most advanced road helmet to date, in addition this one has added MIPS an industry leading safety technologyThe MIPS patent was developed by some of the world's leading researchers in biomechanics and neuroscienceMIPS is setting a new standard for helmet safetyThe secret behind MIPS patent comes from the study of the human brainThe brain is surrounded by a low-friction cushion of cerebrospinal fluidMIPS imitates the brain's way of protecting itself by giving the helmet its own low-friction layer between the outer shell and the linerIn the event of a crash this layer absorbs much of the energy created by a blow to the headThe combination of the brain's own protection and MIPS enables maximum protection for the riderWeighing in at 232 grams Medium sizeSize: Small 52-56 cm, Medium 55-59 cm, Large 58-61 cm