What is Mips in a bike helmet?

Mips is a brand and family of helmet systems intended to help manage rotational motion in certain angled impacts. A low-friction layer is a common implementation. The presence of Mips does not by itself mean a helmet is the best-performing option or guarantee that an injury will be prevented.

· Sources reviewed July 23, 2026.

Why rotational motion matters

Impacts are not always straight-on. An angled impact can produce both linear acceleration and rotational motion of the head. Helmet technologies can be designed to address parts of that motion, but real crashes vary and no single feature captures the whole performance of a helmet.

What the Mips label tells you

It tells you that the helmet includes a Mips-branded system. The exact construction can differ by helmet. For the particular model and size you are considering, check the manufacturer’s description and physical labeling rather than assuming every Mips system is identical.

What the label does not tell you

Compare the whole helmet

Use independent test results, where available, to compare the performance of complete helmet models—not just one named feature. Then check intended use, fit, retention, condition, certification, manufacturer guidance, and current recalls. A helmet that does not fit securely is not rescued by a technology label.

Search the helmet comparison for Mips →

Sources and further reading