Louis Garneau bicycle helmets have a unique mechanism that adjusts their fit with the turn of a knob. Known as Spiderlock Elite, the system gives quick and easy fine-tuning for comfort and stability (and it also takes the hassle out of adjusting children’s helmets). In addition to Spiderlock, this latest high-end helmet features a lightweight titanium frame to hold the helmet together on impact and carbon fiber reinforcements providing extra rigidity. This is among the safest helmets on the market.