There's a lot that has improved with the current generation of the Trek Rally helmet. This helmet features an all-new and improved WaveCel liner that is lighter and cooler than its predecessor thanks to large cells and an optimised use of material. Best of all, this WaveCel liner provides the same level of protection. The helmet also features more coverage, providing more confidence when trails get more aggressive. Blendr compatibility, a goggle strap gripper and sunglasses storage, and a FidLock buckle round off the improvements over the prior model.