Seems to me I read something on the Bicyclesports website about the aero helmet being worth around 8 seconds over 40k which was the same as taping over the holes on a standard helmet. I think I'll stick with my new LG T-Bone which has vents all over the place and is very light.

8 seconds could be the difference between first and 10th place in a 40k TT.

I just got my LG TT helmet last week. It's pretty cool. I like the fit and the visor is great, especially for someone like me that wears contact lenses. You can also get a yellow visor for cloudy days and a smoke one for bright days. I bought a new Giro Pneumo LA edition for normal riding and the LG TT for 1/2 IM and shorter races. I am a little concerned about my head getting too warm, but we will see come July and August. Aerodynamics wise, it's gotta be faster!!

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