— MIPS BPS functionality

MIPS BPS functionality

We know from scientific research that the brain is particularly sensitive to rotation. In the event of an impact, MIPS BPS helmet technology reduces the rotational energy transmitted to the skull and brain by making it easier for the helmet to move relative to the head.


You may have noticed that it’s already possible for even a well-secured helmet to move backwards and forwards on your head; so why MIPS BPS?


It all comes down to energy. Typically, falls happen at an angle. On impact, the forces that build up between the head and the helmet are immense (equivalent to the weight of 14 people suddenly standing on your helmet). Under such pressure, it’s not at all easy for a helmet to move. But when equipped with a MIPS low friction layer, the helmet can rotate, helping to dissipate energy and reduce the risk of serious injury.


Energy redirection

A helmet with MIPS BPS reduces energy as well as a helmet without MIPS BPS in a pure linear impact. But when it comes to the more common angled impact, a MIPS BPS-equipped helmet also reduces damaging rotational energy otherwise transmitted to your brain.


The reduction of the rotational energy is achieved in part, by redirecting the energy from rotation to translation energy. Think about a fall on the ice – you (and your helmet) will just continue in the same direction as before the fall. But if you land on asphalt, there will be a sudden stop and rotation of the helmet.

Proven in the Test Lab

When a brand wishes to release a helmet equipped with MIPS BPS, they must first submit it for approval at our test lab in Sweden, where we compare the same helmet in both MIPS BPS and non-MIPS BPS versions.


Our testing process compares high-speed film and the measured acceleration signals from the head form. When we analyse the film, we see that the MIPS low friction layer allows for a 10–15mm relative motion between the head and the helmet. We then compare the acceleration signals of the two versions, to note that the MIPS BPS equipped helmet significantly reduces head rotation.


The difference between a helmet with and without MIPS BPS is that MIPS BPS allows the helmet to rotate 10–15mm relative to the head, thereby reducing the rotational energy otherwise transmitted to the brain.


More than 31.000 tests at our lab prove that MIPS BPS always adds protection when compared to a helmet without MIPS BPS.