French Fitness Revolution Skull Cap Helmet Liner Running Beanie - Ultimate Thermal Retention and Performance Moisture Wicking. Fits Under Helmets

I love these caps and they fit just right , neither tight nor loose. They are made of good material and I use them everytime I go out to run in cold winters, they keep my ears and head warm and look good too.

It is superwarm and light, an excellent product

Good material, light but keeps the heat in, but doesn't make it uncomfortable to run in..Used as a hat, not under a helmet, so don't know how it would be, but it's light enough and comfortable enough to do so, I can imagine..

The material is lightweight and fits well. Although it is made in Romania but there is no brand name (French revolution) patch or sticker on the product which I found to be weird.

Good quality, soft and very comfortable under a cycling helmet

I wear this under my push bike helmet and my motorcycle helmet. It's a very generous fit so when I'm on my pushbike i pull it right over my ears to keep the wind out.I originally wanted this for under my motorbike helmet in the summer months because i have a completely bald head. If my head gets hot and clammy not only is it difficult to pull the helmet down but also i don't want to make my helmet sweaty. I like the fact it doesn't leave an imprint because the seem is well away from my forehead. Please note I have an XXL head.

Great price in the bundle six for £6 fits great and looks nice

I placed my order to see what they were like. They arrived & I was very pleasantly surprised, they were very well made out of good quality material, soft & comfortable. The only slight downside is that I found that they could have been slightly longer in length with the rim band also being a tad less pliable so that it held on better. Having said that, it is a personal choice & not due to bad manufacturing.In fact I'm so impressed that I've just ordered 2 more.

Fits good, cover ears, and good price.

This is not for an adult, my 7 years old daughter loved it tho.

Would be great for 10 degrees Celcius and under but too thick for hot weather. I'm 7 7/8" hat size and it's on the small side but fits.

Bonnet vraiment confortable idéale pour la marche

I cannot wear this under my Shoei RF1100 full face motorcycle helmet. The head band is double thickness at the circumference. Will not work as advertised! I want to return it but I have to purchase a new return envelope at my expense even tho the shipping is free. It is such a hassle that I might just keep it for $16.35 purchase price.