MELASAWinter Helmet Liner Skull Cap, Fleece Lined Warm Cycling Cap with Glasses Holes, Thermal Hat Beanie for Men Women

The holes for glasses are clever and they work. Not a true one size fits all. Too big for my wife.

Fits well under a helmet. Should work unless it's super cold. I like the eyeglass slots. Material is soft and comfortable.

This hat fits nicely under my bike helmet, It was warm and cut the wind. The problem was it was too small. It should extend to the back of the neck and cover the ears on the side. The slits that were meant to feed the bike helmet straps through were high on my temple, no were near where the bike helmet straps were. If you are riding in cold weather the hat should cover more than just what the helmet covers.

Nice and warm, love the slots to fit sunglasses thru, never gave sweat in my eyes on cool days, I may purchase another!!!

warm, functional and cool looking!

I wear a size 7 5/8 hat and this beanie fits me. It's a little snug, but it's not uncomfortable by any means. I like that it's not too thick, and it fits under my bike helmet just fine.

I love this because there are little slits on each side for the arms on your sunglasses. I love this feature. Keeps my head warm.

Used it for the first time this week. Works well and doesn't affect the helmet fit!