In this video, Bell helmets, part of the larger Easton-Bell Sports company, which makes helmets for the NFL and bicyclists, takes us inside its walls to demonstrate how Bell ensures each of its lids adheres to the highest safety standards.

We all know helmets are a critical item when it comes to our safety on two wheels. But when you look around at your local retailer’s shelves, helmet choices are vast and wide. All helmets are not created equal, and there are a number of safety standards, most notably the Snell standard, any lid worth its salt must pass.

The most obvious safety test measures how well the shell withstands an impact. At Bell, test helmets containing a 5kg weight (similar to a human head) are dropped from various heights, with its resulting g-force measured. The variation in height mimics different road speeds, as protecting your head in a 30 mph crash is no less important than at 150 mph.

But while the single impact test is important, in a fall riders can smack their heads multiple times. Bell also tests for this, in an effort to ensure its shells don’t fail catastrophically and can still dissipate energy during secondary impacts.

Helmet testing is serious business, and if you’ve ever wanted to know what goes into making sure your dome is protected, definitely check this out.