ayamaya Skull Cap Helmet Liner, Thermal Cycling Beanie Hat Wicks Moisture Headwear with Ear Covers for Men Women Running, Skiing & Winter Sports-Perfect Under Motorcycle Helmets,Hard Hat Cushion

I've only worn it twice since receiving it, it served the purpose I bought it for which was mild cold weather however I don't think it would keep ears warm while biking anything lower than low 50's

too tight on my head

We bought these to provide another thermal layer under our bike helmet.We thought that we would get one free with each of the two HiVisible bike helmet covers we purchased (per promo for the helmet covers), but were allowed only one free one. The small $$ we spent for the second one was worth it.

I am very happy with this cap. I bought it to wear under my motorcycle helmet on cool mornings. Fits my head just right (helmet size 7 3/8 / large), covers my ears just enough. Material is nice, not too thin or thick. Cap appears to be well made. I liked it enough to buy a second one. Good job, Ayamaya!

Love the design and material. I've gone through a lot of different types of these skullcaps. Mostly they're too tight or just don't fit around the ears protecting my earbuds when I put my helmet on. This is perfect and I've ordered many of these

Bought this to wear under football helmet to make is more comfortable for my son. He says it helped.

would be a five star for sure if it was slightly larger. i wear medium sized caps, so i would have expected this to fit better and give me better coverage of the ears. since it doesn't, i do have issues with it sliding up while riding and exposing the ears.

This cap is just the right weight for 50-70 degree days. I use it even when I don't need one for warmth, as it blocks wind noise and allows me to hear my surroundings better. It is well designed and well made.