Tough HeadwearTough Outfitters Thermal Helmet Liner - Football Skull Cap for Men - Winter Running Beanie, Under Helmet Cap & Cycling Caps - for Running, Skiing, Winter Sports

Best winter hats to wear under a hard hat thin and warm never itchy.

These were perfect for under our ski helmets! Kept our ears warm and the helmet snug in place!

This surely warmly covers your head, ears, and neck. It's much better than others I have that leave much of your ears exposed. I mostly will use this under my biking helmet. However, as someone else noted, it flips back at the bottom of the ears. The good news is that you can tuck the ends under and it still covers your ears pretty well.

This works great under my half style motorcycle helmet to keep my ears warm. What a great idea. And, it’s reversible.

Keeps me warm at all times, my regular hat fits right over. Very happy bold guy.

It occurred to me while I am shopping for new bicycle helmets that I ride a high percentage of my rides with this helmet liner on at some point in the ride. Many of my fall and spring rides start with the liner on when we are in the 40s or low 50s Fahrenheit until I warm up. My winter rides and commutes always utilize this item. So, I am making sure when I try on helmets that I try them on with the helmet liner too.This helmet liner is very comfortable. It provides great coverage of the head, forehead, and ears without obstructing my view at all. This is incredibly comfortable to wear and is very warm. I have done bike commutes in the 25 degree Fahrenheit range with this helmet liner on and was not cold. I should add that I had glasses on to protect my eyes and I had a Buff Merino Wool gaiter on that covered my face. This liner is perfect with a Buff for cold weather, though, because you can have the Buff protect your neck, overlap the liner at the ears and cheeks, and cover your face.This is a great product. I am really glad I bought it. I have ridden so many fantastic rides with this helmet liner that if I did not own it I would either have not ridden or I would have been in something less comfortable or been too cold. Highly recommended. I use it for road cycling, touring, and commuting.

Good product but I purchased the 2 pack and only received 1 helmet liner.

I really like their helmet liners. They fit comfortably. Sometimes I double up the one without earflaps, putting the one with ear flaps over for extra warmth. And I also like to wear them on top of a ball cap to have a visor. A lot of versatility in these.