Never used these kinds of headphones before but it's amazing when I first put it on. The world seems clear. It's really good to use it in the library or on flights. It will give you a good environment with less noise
A little expensive and there is a box hanging on the wire. I think QC30 solve the problem

The Bose QC 20 headphones are I think best noise cancelling headphones available.perfect for using on flights I have used these always on long haul flights for many years with no problems.
These are a little expensive but well worth it .
They are quite comfortable without your ears getting hot

Great product. Bose are by far the forerunner in noise-cancelling headphones. The QC20 are great as they mobile, easy to move around and have a rechargable battery. The problem is that Bose products are over-priced and this is no exception. Also, it's annoying how there is an 'android' and 'iphone' version. Recommended however try to purchase it when on sale. The QC35 are the best for noise-cancelling, the QC20 are recommended for someone who doesn't want a bulky product and requires portability.

These headphones are incredible! I was extremely skeptical about spending the amount of money on a single set of headphones but it is 100% worth it! They are extremely comfortable to wear for a long period of time, have an amazing sound quality and incredible noise cancelling technology in built! 10/10

Have been use these HP for over a year on my weekly international flights.
They have the best noise cancellation and are very comfortable. I can wear them for hours without my ear getting hot.
Sound quality wise they are great. Would have love for them to have a bit more bass or provide an app for modify the EQ.
They are durable and the batteries last a long time.

These have changed my flying experience forever.
I can never go back to normal ear phones ever again! And.. bonus, you can sleep with them in :)
Well worth the money, I can highly recommend.
Bose are known for sound for a reason, obviously!
Don't waste money on lesser brands.

These are the only active noise-cancelling earphones I've tried; they are worth every penny. It is amazing at blocking out almost all sounds, especially low frequency background noise such as construction, plane engines, etc. However, for high frequency noises such as babies shrieking, it is less effective. The battery lasts a very long time after a short time charging, and overall I think it is a very solid, timeless pair of earphones.

We bought these earphones for my husband who suffers from tinnitus and sometimes experiences ear pain when flying. The Bose QC20 ear buds have made a big difference in his comfort when flying, drowning out the sometimes quite loud noises the plane makes. He plays either continuous music or white noise sounds on them. The quality of the music is amazing. It has made air travel a lot less stressful for us. The small size means it's easy to pack too. We love this product.

I use these daily for my bus commute and for that they are perfect. The noise cancellation is very impressive, and unlike all the noise isolating earbuds I've used they are not fussy about how they're positioned in your ears. You just put them in, turn them on, and it all works. They are also quite comfortable, and the sound quality is really good with the noise cancellation turned on.

I bought these for myself and the sound is totally awesome and so comfortable to wear! Comfortable enough to sleep with them in! Great for night time meditation music! They are light weight and tough! I always fall asleep with mine in and never had a problem. I also bought a set for my son to!

We have QC3 and QC15 and decided for short trips we needed something more compact. The QC20 really fits the bill. They are surprisingly comfortable and the best thing is the fit in your pocket so no more forgetting to get the headset out of the carry on before putting it in the overhead locker.

At first we thought noise cancelling wasn't great as we were used to feel of the QC3 and QC15 but turn the noise cancelling off and you can see how good they really are.

Love the fact if the battery runs out you can continue listening, you just loose the noise cancelling component.

I have been a fan of Bose fr many years and I think this has to be one of their worst products. It is adequate but I have rated this poory purely because of the price and the awful quality of the product. You really still get significant noise and so noise cancelling does not work well. Also the cable that is connected to the unit electronics unit did not take long to disintegrate! :-(

Not happy.....

I've owned my QC20 for 2 years. Prior to my QC20, I was using the Pioneer SE-NC31C-K which also has active noise cancellation. I always take great care of all my gears but I'm quite disappointed with my Bose QC20. The rubber wiring insulation has not hold up as well as my Pioneer. I'm seeing cracks along the cable and right below right-angle jack. For the price I have higher expectation from Bose brand.

I really like to listen to some music, classical and slow musics, but living an a crowded area I'm unable to do so. That's why nose quiet comfort is perfect for me. You can just immerse yourself to the music you listen! It fits in your ear really well as well!

The earphones are very comfortable to wear, and do a good job at cancelling background noise. The built-in rechargeable battery last quite a few hours on a single charge, and then even after the battery dies, the headphones can still be used to listen to audio without the noise cancelling feature. However, after about a year of use the L-shaped jack connection has worn and frayed. Given the high price tag of the earphones ($399+), this is a little disappointing. A couple of emails and about an hour on hold with Bose "support" and I still haven't made contact with Bose to see what can be done about getting the headphones repaired.

On the pricey side however these earphones are definitely worth it. Been looking for really good noise cancelling earphones for awhile and a friend recommended these ones and I haven't ever looked back. However on the down side I dropped my laptop whilst using it and the cord just snapped clean. So that's all my money down the drain

This is the ultimate I don't believe there is better In ear headphone on the market.
The unit comes with a module that when activated cancels out all background noise.
It's so effective at this that is an ambulance were to drive past you with the sirens going you would love you as we expect from Buzz the sound quality is exceptional and Price is equally so if you can afford why would you use anything else.
These were gift from a very good friend I'm eternally grateful to, for having a night so generously spoiled me I might never have really understood the best sound can possibly be.

I replaced a previous set of Bose in-ear noise cancelling headphones with these. They worked well at first but after about six months began to drop in quality of noise cancellation. If you like a compact in-ear headphone then these are fine, however i think the larger headphones work a lot better.