Bontrager Rally WaveCel MTB Helmet Shred hard and put your safety first with the Bontrager Rally WaveCel MTB Helmet, blending comfort and performance with trail-specific features. The stylish Rally is fully equipped with smart WaveCel technology; a cellular structure that flexes crumples and glides to redistribute energy created upon impact away from the head. It lines the inside of the helmet for subtle but superior protection designed (and rigorously tested) to be more effective than traditional foam helmets. The BOA Fit System is easily adjusted and secured for optimum comfort and a precise fit and can be altered effectively with one hand. Additional drop-in coverage is provided by the extended shell at the back of the helmet to enhance rear protection, whilst straps can be modified to find the perfect fit thanks to LockDown strap dividers. Sweat is kept out of your eyes and wicked away from the skin by washable pads that kick into play when the heat is on, so there's no distraction from your ride.