Adam T.wrote a review of Kask Infinity Helmet on March 14, 2018
Familiarity: I've put it through the wringer
Fit: True to size
First I will admit I'm not a fan of the way this helmet looks. I use it anyway because it is the best cold-weather helmet I have found. The sliding vent lets you choose between aerodynamics and ventilation, and while there are aero helmets now available (Scott Cadence) that best it in both of those categories, this helmet is unbeatable in cold weather. I live in a 4 season climate with winter temperatures around the freezing point and summer in the mid to upper 80s on average.
The retention cradle has an incredible range of vertical adjustment, so most people can find a comfortable fit. If you have a long-oval head shape then Kask is not the brand for you. The chin strap is a nice touch, but from my experience it's indistinguishable from a standard fabric strap once you're moving. The padding inside the helmet looks a bit like a web, but it's comfortable and stays surprisingly dry at all times.
The real ace this helmet scores is its versatility, especially in cold weather. In freezing temperatures I use a light thermal skull cap with the vent shut completely most of the time. When my head gets a bit too warm, all it takes is maybe a 1/4in opening of the vent for 1-2 minutes and my head stays cool enough to remain comfortable. In temperate conditions it's vent open most of the time except for when you really want those marginal gains, be it races or a fast group ride.
I can't give this helmet a perfect score because the ventilation doesn't cut it if you're trying to use it on hot summer days or in the mountains. For that I use a much more ventilated lid, but one can complain that at this price you should be able to use a helmet year-round, regardless of how spectacular it is in colder conditions.
I have put 4000 non-summer miles on this helmet and find it to work extremely well, aside from a small rattle issue. When the vertical adjustment on the cradle is fully extended downwards, there's a small amount of play between the notched plastic slider and a small piece holding it in place in the center of the helmet that causes some rattling from time to time. The way to correct this is to adjust this cradle upwards by one small click, and then the rattle subsided.
Overall it's a great buy but at this price I don't think it's excellent enough for a 5 star review; 4.5 stars would be more like it.