Personally I found the Specter Wavecel to be intolerably hot on any slightly warm day, there seems to be little air movement through the helmet. It's just about the hottest helmet I've ever used, a real deal-killer. Also, the straps annoyingly would not hold tension and loosened repeatedly on rides. On the upside, it's fine on cool days, I found it to be a comfortably fitting helmet and the magnetic buckle works well. Still, I basically never use mine...