The outer shell is highly resistant. In the event of an impact, it's the inner shell which, by collapsing in on itself, absorbs the impact energy and protects the head.
On the other hand, once a shock has been sustained, the inner shell does not return to its original shape, which is why it is extremely important to have your helmet checked after every fall. We find that it's not uncommon for riders to continue riding with a damaged helmet after a fall, even though there's a consequent risk that the helmet is no longer safe.
In response to this problem, Samshield is the only brand in the world to offer an after-sales service capable of replacing the inner shell with a new one, while retaining the same outer shell. This means you can guarantee your safety without having to reinvest in a new helmet.
This service is available within 5 years of purchase. A Samshield helmet is therefore a safe, long-term investment.