It is now used to construct extremely tall buildings. A bicycle helmet is a simple shell structure. The function of a bicycle helmet is to help protect a cyclist’s head. The thin curved outer ...

A reliable bike helmet is one of the most important ... interior is fully fused to the hard exterior shell to make the helmet structure stronger without adding too much weight.

The new Smith Payroll is a fully-vented mountain bike helmet, protected by a light Koroyd energy-absorbing structure over the majority of its body. Plus, a hidden internal roll cage skeleton to ...