Otherwise, it is comfortable to wear, well designed, rather light (compared to others, with big headphones) and end in thickness: the pressure on the ears and well calculated, malgrès it is present, it not that strong or unpleasant feeling we hear his own breathing (met on low prices helmet crafts, or even with foam plugs).
Surprisingly, I also utilisse audio with my sony headphones (ref: MDR-E828LP) slid underneath, coupled with "SRS Audi Sandbox" is perfect. I think this would be ideal for this to protect those who make music (drums, guitar electric), with the possibility to slide headphones.
What's more, the prices quoted by AMAZON (winning about 10), I am satisfied for the moment.