4 stars because it is very tight around the neck, making it uncomfortable. It should have come in different sizes and not be one size. Otherwise, very warm.

So far (October), it keeps me warm in the cold. Good breathability thanks to the ventilation holes it has.
Sometimes it slips off while I’m putting on my helmet, possibly because of the size. It’s one size, and I’m a woman. I’d like it to be more open at the bottom so it would keep the back of my neck warmer. In colder winter weather, I might want something warmer.

It stretches out after 2 winters with daily use, but honestly for the past 10 years I haven't used any other than this one, and if it stretches out again I'll buy the same one again

In my possession for 4 years, maybe a little more. I am getting ready to buy again!
Slim design, incredibly convenient (you wear it like a Ninja!) and the helmet fits on without any difficulty!
Keeps your head, neck/nape, and of course your face warm. It also has these small holes so you can breathe!
Very high quality, in 4 years I have washed it countless times, the elasticity hasn't worn out, nor has the material at all.
I'm getting a second one so I have it when I go out for a ride with the motorcycle. I used it at work since I am a courier and I am on the bike for 8 hours.
Excellent, I recommend it 1000%!!

Although it is thin, it does not let the cold through and fits perfectly on the face without bothering you when you wear a helmet

It is not as completely windproof as I thought from the comments.
Having an issue with my neck, which is affected by the wind and gives me headaches, windproofing is very important to me, beyond just keeping the area warm.

I had it for 2.5 years in delivery with a jet helmet, I didn't feel cold at all, extremely good, worth its money.

I have had it for two months. I can't say how it will hold up over time, although it seems very high quality; the only reason I'm giving it four stars is that I believe it could be a little cheaper. Nevertheless, you definitely get what you pay for in terms of brand.

Whatever I say is not enough, in the end you get what you pay for. With almost an open helmet due to the non-fogging feature, I took the Karera to N. Penteli and I didn't understand anything with 9 degrees. Perfect fit and sufficient breathing covered my nose and ears adequately. PS I have a big nose and ears. PERFECT in everything it does!!!!!

I used it last winter up to 0 degrees Celsius. It is thin in material thickness (windproof on the outside and fleece on the inside) to be easily worn under the helmet, but it really doesn't let anything through.
It has been washed several times and shows no signs of damage, neither from the washing machine nor from use (although I don't know how it holds up over time as I have used it for a maximum of 3-4 months).
The only negative thing worth noting is that it has a relatively tight fit, which may not be comfortable for some. It's not uncomfortably tight, it just doesn't sit wide on the neck if that's what you're looking for.
Other than that, it's worth the 30 euros.

The quality of materials, application, and design are very good. I would like to point out that the size would correspond to medium to small for everyone. It would be too small for larger individuals.

The best thing on the market, it never gets cold and the most important thing is that it is very thin and doesn't damage the helmet pads. Bravo!

I have had the collar for 1 month now. Very good. I saw the comments of the previous ones and they fully correspond to reality. I will see how the rest of the time goes and I will update the comments! The best.

So far very satisfied. I use it with an open helmet. It cuts through the frozen air on the neck perfectly

Very good and warm, however it is a bit tight if you wear it up to the nose. I always have it lower and it's perfect.

Excellent for its price. It fits as tightly as it should and so far, it covers very well against the cold air. I recommend it

I have worn it 3-4 times since the day I bought it, it looks like a very high-quality product. It kept me warm during my scooter ride. It also has holes in the front for breathing, to be honest, with the half helmet and the visor down, I couldn't breathe as well, I had to have the visor up. Otherwise, time will tell the quality and how long it will last!

Excellent product. Warm, doesn't suffocate you, easy to breathe when you have it on your nose, and fully protects you from air, cold, etc. After 1.5 hours, it started to bother me a little on my nose, but I have a big nose. After 4-5 washes, it still feels like new, the color hasn't faded, it hasn't gathered, leaked, or the material hasn't worn out.

I have no words for this specific collar. I only ride motorcycles, almost all year round. The construction quality is incredible, as well as the material. It hugs the neck without tightening like other poorly made and low-quality ones I have bought in the past and ended up being garbage. It is warm, breathes well through the holes it has, and after 5 years of continuous use and washing, the elastic fabric that touches the nose has not loosened, nor has a single stitch opened. This winter, I lost it and bought the same one again. As a friend said in a comment, you get what you pay for... I hope I helped some people who are considering buying it.

Excellent product. It is warm without letting air pass through the neck. Holes for easy breathing in the nose area. The most important thing is that it is not thick and can comfortably close the jacket.

It keeps your neck very warm and doesn't let any cold air pass through... a very good purchase for its price

Quality product. It has enough length for the neck and there is extra. The neck does not get cold at all.
The holes in the mouth, although they help with speech and breathing, give a feeling of coolness when the visor on the helmet is open. The nose remains adequately protected and driving in the cold with the visor open is comfortable.

The neck warmer is incredible, very warm with a great fit, it doesn't fall off from the helmet, worth every last euro