I recently decided to replace my tried and true well used Giro Atmos helmets with a new ones. For me the Giro was the perfect balance of ventilation, weight and fit. I looked at all the new offerings and decided to try out the Mavic Plasma SLR as one of my options. And I am so glad I did. While a bit heaver then the Giro Atmos or Aeon I do not notice and the fit and air flow make it not matter. And the price here on CC makes it a done deal. I bought two of the SLR's and another non-SLR Plasma for off road. Very pleased!