I never ended up using this as it fit like a shower cap and decided to exchange it for the Craft version. I have a medium sized head and the elastic held the cap on but it looked too mushroomy. Probably wouldn't be a problem under a helmet but didn't work for me. The material seemed decent and the styling was nice, apart from the aforementioned fit. I went for the Craft rain cap which fits great, folds up, and works in the rain.
I use this when there is any danger of rain. I wear glasses all the time for dstance so a cap when it is raining is essential. I keep te cap it in the rear pocket of my Showers Pass rain jacket. I use Halo Headbands and skullcaps when it is not raining. I really like their sweatband system. I have used traditional cotton or cotton blend cycling caps which are not waterproof and this cap is better in that respect.
Bought this hat to increase my comfort on rainy day commutes. It fits well, snug and does not interfere with helmet. The visor does a good job of deflecting rain off my eyewear. This cap also wards off an uncomfortable wind chill when the temps are above the 30s. Below that temp I prefer a bit more insulation but rain protection of this cap trumps the extra warmth of a fleece cap. I ride in the dark frequently and an under the helmet cap allows use of lights on my helmet which a helmet cover would not.
It's breatheable and waterproof - really!
Fits nicely under your helmet without having to remove pads. Perfect for those days when it's rainy in the morning and nice in the afternoon - your helmet fits with and without the cap.
As with all cycling cap, the bill is used to keep rain and debris out of your eyes in nasty weather not condusive to lenses - which fog and splatter.
Keeps your head warm and dry, keeps the raindebris out of you eyes. Superior to a helmet cover and protective lenses in nasty weather.
This cap is waterproof and does quite well but it doesn't fit my head right. it seems to bunch up on the right side of my head and I get interesting comments about it. I thought this hat would be hot but it really is not it breathes really well I just wish I didn't look funny on my head
Its possible that the hat is defective but I dont see any visible defects