They are true "noise-cancelling" headphones. But all it does is smear the lenses and stripes are showing on the lenses. Comfortable, lightweight, washable and doesn’t slip off. For them being so small, the bass sounds amazing. They are worth the money if you want to be freed from the tyranny of modern noise and are comfortable enough for long use. Also cute and easy to put on. This is not the first pair I buy and my son loves them. I would definitely purchase these again! The sound is truly full and rich and rewarding. 5 eco boost