Specialized s-works prevail helmet

Fast facts:

• medium weighs 218g;
• very comfortable and adjustable retention system;
• good protection around the back of the ears, side of the lower skull;
• visor from S3 helmet fits, although prevail does not have the retaining indent. It does however, have the slot. Retention seems enough even without the indent. I use a couple of small zip ties for extra security;