A few weeks ago I was in the mood to buy a new bike helmet before the start of summer. I had planned on buying the super-lightweight Giro Ionos Road Bike Helmet because its massive air vents were very appealing to me. When I tried the Giro Ionos on in the store it was very comfortable. However, when I got down into the position like I would normally be in when riding in the drops I could easily see the bottom edge of the helmet above my sun glasses. As a result, I started looking for another brand of helmet and settled on the Trek Circuit Helmet.
The Trek Circuit Helmet is only slightly heavier than the Giro Ionos, but about $130 less (the Giro Ionos retails for $230, while the Trek Circuit retails for $100). While at the bike shop I held the Giro Ionos in one hand and the Trek Circuit in the other and the difference in weight was very insignificant.
The Trek Circuit Helmet has 21 well-placed vents that provide excellent air flow. Trek’s ZipTite 2 fit system is excellent and the helmet is so light and fits so well that it is easy to forget you are even wearing it. I rode over 500 miles with this helmet in the past few weeks and would highly recommend it to any cyclist.