If you’ve shopped for a riding helmet in recent years, you’ve likely seen a bright yellow logo inside the shell or stamped on the tag: MIPS.
Short for Multi-directional Impact Protection System, MIPS is one of the most significant safety advancements in helmet technology over the last few decades. But what actually is it, and why are equestrian safety organizations and riders paying so much attention to it?
Here is a clear breakdown of how MIPS works, why rotational force matters during a fall, and what to keep in mind when picking your next helmet.
The Problem: Linear vs. Rotational Impacts
Traditional riding helmets are designed and certified primarily to protect against linear impacts—straight-on, perpendicular hits (think dropping a helmet straight onto flat concrete). Expanded polystyrene (EPS) foam inside the helmet compresses on impact to absorb that blunt force.
However, real-world riding falls rarely happen in a straight line.
When a rider falls from a horse, they usually hit the ground at an angle while moving forward. This angled impact creates rotational motion—a sudden twisting force transferred directly to the head and brain.
Why Rotational Force Matters:
The human brain is anchored loosely inside the skull, surrounded by cerebrospinal fluid. When your head stops abruptly or twists violently on impact, the brain can slide and shear against the inner skull wall. This rotational strain is a primary cause of strain injuries, concussions, and severe traumatic brain injuries (TBIs).
How MIPS Works: Mimicking Your Brain's Natural Defenses
MIPS was developed by Swedish neurosurgeon Hans von Holst and researcher Peter Halldin. They realized helmet safety testing overlooked angled impacts, so they designed a system to mimic how the human body naturally protects the brain.
Inside a MIPS-equipped helmet, you’ll find a thin, flexible low-friction layer anchored between the comfort padding and the EPS foam liner.
Here’s what happens during a fall:
-
Angled Contact: Your helmet hits the ground at an angle.
-
Controlled Sliding: The low-friction layer allows the helmet's outer shell and foam to slide 10 to 15 millimeters in any direction relative to your head during the critical first milliseconds of impact.
-
Energy Redirection: By allowing this slight relative movement, the helmet redirects dangerous rotational energy away from your brain, converting rotational force into harmless sliding motion.
Frequently Asked Questions About MIPS
Does a MIPS helmet fit differently?
Generally, no. The MIPS layer adds less than a millimeter of thickness and very little weight. You should size your helmet the exact same way as traditional helmets—ensuring a snug, level fit without pressure points.
Are non-MIPS helmets unsafe?
Not at all. Standard certified helmets (ASTM/SEI, VG1, PAS 015) offer critical protection against skull fractures and direct impact forces. MIPS simply adds an additional layer of defense against angled rotational forces that traditional standards historically haven't measured.
Do I need to replace a MIPS helmet after a fall?
Yes. Just like any equestrian helmet, once a MIPS helmet sustains an impact—even if there is no visible damage on the outside—the inner EPS foam compresses and the MIPS anchors may stretch. Always replace your helmet after a fall or every 3–5 years due to general wear and material degradation.
The Bottom Line
While no helmet can make horseback riding 100% risk-free, opting for a helmet equipped with MIPS provides targeted protection against the rotational twisting forces common in real-world falls. Investing in rotational impact protection is one of the smartest upgrades you can make for your long-term health in the saddle—provided the fit is right.
A Note on Fit:
"When selecting safety gear, proper fit remains paramount. Ultimately, a properly fitted traditional helmet will protect you far better than a poorly fitted helmet equipped with MIPS technology. Advanced safety features can only perform as designed when the helmet sits correctly on your head."